Penggunaan kode morse atau sandi morse memudahkan pengiriman pesan melalui telegraf dan radio, dengan kombinasi pesan titik dan garis. Yuk, ketahui sejarah sandi morse, penemu, dan rumusnya di artikel ini!
—
Siapa hayo yang sering menggunakan kode untuk berkomunikasi untuk sang gebetan? Ternyata, penggunaan sebuah kode untuk komunikasi telah lama digunakan, lho! Salah satunya adalah sandi morse.
Sandi morse ini sebenarnya bukan untuk terlihat misterius, apalagi membuat orang penasaran, ya. Kalau kamu pernah ikut pramuka waktu sekolah, pasti udah nggak asing dengan sandi morse. Apa sih sebenarnya yang dimaksud dengan sandi morse? Yuk, kita bahas!
Pengertian Sandi Morse
Sandi morse sering disebut juga dengan kode morse. Menurut Kamus Besar Bahasa Indonesia (KBBI), sandi morse adalah kode berupa titik dan garis sebagai pengganti huruf, angka, dan tanda baca yang digunakan pada pengiriman dan penerimaan berita telekomunikasi.
Dengan kata lain sandi morse adalah metode penyampaian pesan lewat bentuk atau syarat, titik dan garis untuk mewakili huruf, angka, dan tanda baca. Jadi, garis (-) dan titik (.) ini nantinya akan membentuk kombinasi pola sesuai pesan yang ingin disampaikan.
Bunyi yang dihasilkan oleh simbol garis adalah bunyi panjang. Sementara simbol titik, bunyi yang dihasilkannya adalah bunyi pendek.
Walau zaman sudah semakin modern, penggunaan sandi morse masih banyak digunakan, loh. Sandi morse sering kali digunakan untuk memberikan sinyal “SOS” (…—…). Sinyal “SOS” merupakan suatu sinyal yang digunakan untuk memberikan tanda bahaya. Sinyal ini sudah disepakati dalam berbagai perjanjian maritim internasional.
Nah, beberapa sinyal dari sandi morse ini sudah banyak disepakati oleh negara-negara di dunia, terutama yang berhubungan dengan dunia kelautan, guys.
Baca Juga: Benarkah Guglielmo Marconi Penemu Radio yang Sebenarnya?
Sejarah dan Penemu Sandi Morse
Samuel F.B. Morse dan telegraf. (sumber: britannica.com)
Sandi Morse ditemukan oleh seorang seniman Amerika Serikat pada Tahun 1833, bernama Samuel F.B. Morse. Awalnya, sandi morse digunakan pada telegraf untuk memudahkan penyampaian pesan. Pengiriman pesan sebelumnya yang menggunakan sebuah kompas penunjuk angka dan huruf di telegraf dinilai tidak praktis.
Sandi morse dianggap lebih efektif karena bisa ditransmisikan ke dalam bentuk detak sinyal elektrik di telegraf, ataupun sinyal mekanik, serta bisa juga dalam bentuk visual, seperti cahaya. Jadi, selain melalui telegraf, sandi morse banyak digunakan di berbagai media lain seperti senter, asap, dan lainnya.
Namun, sandi morse temuan samuel ini masih dirasa kurang praktis untuk digunakan dalam skala internasional, maka pada tahun 1851 sebuah konferensi di Eropa tepatnya di Berlin merumuskan ulang rumus sandi morse dan kita gunakan sampai sekarang formulanya.
Dalam rumusan baru ini semua panjang garisnya sama dan nggak ada spasi penghubung dalam rumusan satu karakter. Jadi, jauh lebih mudah untuk diingat.
Perbedaan kode morse versi Amerika dan Internasional.
Nah, penggunaan sandi morse banyak dipakai untuk komunikasi radio pada kapal waktu perang dunia kedua, perang Vietnam, dan perang Korea. Beberapa radio amatir waktu tahun 1990 masih banyak yang memakai sandi morse.
Sampai sekarang, kalau ada keadaan darurat atau bencana, sandi morse juga masih digunakan, yang paling sering adalah “…—…” yang artinya “SOS”.
Baca Juga: Macam-Macam Sandi Pramuka & Contohnya yang Sering Digunakan
Rumus Sandi Morse
Berikut rumus sandi morse yang bisa kamu ketahui:
Huruf Sandi Morse
A = • –
B = – • • •
C = – • – •
D = – • •
E = •
F = • • – •
G = – – •
H = • • • •
I = • •
J = • – – –
K = – • –
L = • – • •
M = – –
N = – •
O = – – –
P = • – – •
Q = – – • –
R = • – •
S = • • •
T = –
U = • • –
V = • • • –
W = • – –
X = – • • –
Y = – • – –
Z = – – • •
Angka Sandi Morse
1 = • – – – –
2 = • • – – –
3 = • • • – –
4 = • • • • –
5 = • • • • •
6 = – • • • •
7 = – – • • •
8 = – – – • •
9 = – – – – •
0 = – – – – –
Tanda Baca Sandi Morse
. = • – • – • –
, = – – • • – –
: = – – – • • •
– = – • • • • –
/ = – • • – •
Manfaat Sandi Morse
Setelah memahami pengertian dan menyimak sejarah singkat sandi morse, saatnya kita membahas manfaat sandi morse. Apa saja sih manfaat sandi morse selain sebagai kode “SOS”? Nah, beberapa manfaat sandi morse, di antaranya:
1. Sebagai media komunikasi
Manfaat utama sandi morse adalah sebagai media komunikasi, terutama komunikasi dengan jarak yang berjauhan. Sampai saat ini sandi morse sering digunakan dalam keadaan darurat atau bahaya.
Sinyal “SOS” akan dikirimkan menggunakan sandi morse untuk memanggil bantuan. Selain itu, sandi morse juga masih sering digunakan dalam dunia kelautan nasional maupun internasional.
2. Dipakai pada telegraf
Apabila membahas sandi morse, tentu tidak lepas dari telegraf. Seperti yang sudah dibahas di atas, awal muda kemunculan sandi morse digunakan untuk menyampaikan pesan melalui telegraf.
Dengan adanya sandi morse, telegraf bisa berfungsi dengan baik. Pesan yang dikirim melalui telegraf dengan sandi morse akan diterima dengan baik oleh penerima pesan. Pada zaman dahulu, militer juga menggunakan telegraf dengan sandi morse untuk mengirim dan menerima pesan.
3. Digunakan pada kegiatan pramuka
Siapa di sini yang aktif ikut pramuka di sekolahnya? Buat kalian yang aktif jadi anak pramuka pastinya sudah familiar dong dengan sandi morse. Dalam kegiatan pramuka, sandi morse menjadi salah satu sandi paling umum dipelajari. Biasanya, sandi morse dalam pramuka akan digunakan menggunakan peluit.
4. Untuk menyampaikan pesan rahasia
Seperti sandi lainnya, sandi morse juga berfungsi untuk mengirim pesan rahasia. Pesan rahasia yang dimaksud adalah pesan yang hanya bisa dibaca oleh orang-orang tertentu saja.
Nah, penyampaian pesan rahasia dengan sandi morse biasanya hanya digunakan dalam bidang intelegensi. Sandi-sandi morse yang digunakan hanya diketahui oleh kelompok-kelompok yang sudah saling sepakat. Wih, keren sekali yah!
Cara Menghafal Sandi Morse dengan Cepat
Kayaknya menghafal sandi morse persatu karakter cukup sulit ya? Tapi tenang aja, ada cara mudahnya, kok. Yuk, kita coba pelajari rumusnya!
Pertama, kamu harus ingat simbol huruf vokalnya nih, seperti A, I, U, E, dan O. Nah, tanamkan dalam pikiran kalau bertemu huruf vokal A, I, U, dan E, berarti melambangkan titik, sedangkan O adalah garis.
Kedua, kamu harus menghafal kata-kata unik di bawah ini, di mana huruf awalnya melambangkan huruf yang akan diubah ke dalam sandi morse:
A: Ano ._
B: Bonaparte -…
C: Coba-coba -.-.
D:Dominan -..
E: Egg .
F: Father Johan ..-.
G: Golongan –.
H: Himalaya ….
I: Islam ..
J: Jago Loro .—
K: Komando -.-
L: Lemonade .- ..
M: Motor —
N: Notes -.
O: Otomo —
P: Pertolongan .–.
Q: Qomokaro –.-
R: Rasohe .-.
S: Sahara …
T: Tong –
U: Unesco ..-
V: Versikaro …-
W:Winoto .–
X: Xoxendero -..-
Y: Yosimoto -.–
Z: Zoroaster –.
Kita ambil contoh misalnya huruf ‘Q’, kata uniknya adalah ‘qomokaro’. Jika kita lihat huruf vokalnya dari depan, maka akan tersisa ‘OOAO’. Ingat huruf vokal selain ‘O’ adalah titik dan ‘O’ adalah garis, berarti ‘Q‘ adalah ‘–.-‘ dalam bentuk sandi morse. Bisa juga coba huruf lain dengan rumus ini, mudah bukan?
Baca Juga: Alexander Graham Bell dan Penemu Telepon ‘Lainnya’
Quiz time (Sumber: tenor.com)
Contoh Kalimat Sandi Morse
Sekarang kita main tebak-tebakan yuk, guys. Coba nih apa arti dari contoh kalimat sandi morse di bawah ini?
.- -.- ..- / … . -… . -. .- .-. -. -.– .- / … ..- -.- .- / … .- — .- / -.- .- — ..-
- Aku sebenarnya sedang sibuk memikirkanmu
- Aku sebenarnya adalah pahlawan bertopeng
- Aku sebenarnya suka sama kamu
– — .-.. — -. –. / .- -.- ..- / -.. .- .-.. .- — / -… .- …. .- -.– .-
- Tolong buka pintu sekarang
- Tolong aku dalam bahaya
- Tolong aku sedang kesulitan
-. . -. . -.- / -. .- .. -.- / –. . – . -.-
- Nenek naik getek
- Nenek naik becak
- Nenek naik mobil
—
Yeay! Gimana? Seru kan bahasan kita kali ini! Kamu jadi tau sejarah dan siapa tokoh penemu sandi morse. Kalau kamu mau tau lebih banyak tokoh penemu/biografi ilmuwan lainnya, bisa lhoo cekicek di sini!
Ingin lebih banyak memecahkan berbagai kebingungan? Ternyata banyak rumus lain lho yang bisa memecahkan beragam persoalan. Yuk! coba belajar bersama kami di ruangbelajar. Jangankan memecahkan kode morse, memecahkan rumus matematika yang njelimet sekalipun jadi lebih mudah kok!
Referensi:
Rafferty, J.P. (2020) ‘Morse Code’, Encyclopedia Britannica, 18 September 2020 [online]. Tautan: https://www.britannica.com/topic/Morse-Code (diakses 3 November 2021)
Akmal. (2020) ‘Cara Mudah Menghafal Morse, Yang Mengaku Anak Pramuka Wajib Tau nih!’, Sijai, 31 Mei 2020 [online]. Tautan: sijai.com/cara-mudah-menghafal-morse/ (diakses 4 November 2021)
Sumber Foto:
Encyclopædia Britannica. (2021) Samuel F.B. Morse with a model of the telegraph, engraving [online]. Tautan: https://www.britannica.com/biography/Samuel-F-B-Morse#/media/1/393059/143675 (diakses 3 November 2021)
Encyclopædia Britannica. (2020) American patterns dots International Morse Code letters [online]. Tautan: https://www.britannica.com/topic/Morse-Code#/media/1/393067/61523 (diakses 3 November 2021)
Wheel Of Fortune Wof GIF by lrducky1331 [online] tautan: tenor.com/view/wheel-of-fortune-wof-wheel-game-show-jeopardy-gif-18418456 (diakses 3 november 2021)
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<h1 class="content-title">
Sandi Morse: Sejarah, Penemu, Rumus & Cara Mudah Menghafalnya </h1>
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<p class="content-author"><a href="https://www.ruangguru.com/blog/author/galang-kris-nanda" class="">Galang Kris Nanda</a> </p>
<p class="content-info"><span>July 16, 2025 • </span> <span>7 minutes read</span></p>
<br />
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<p><em><img decoding="async" style="width: 820px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Fakta%20Seru%20-%20Sejarah%20Sandi%20Morse-01.jpg" alt="Sejarah Sandi Morse" width="820" /></em></p>
<blockquote>
<p style="font-size: 16px; text-align: center;"><em>Penggunaan kode morse atau sandi morse memudahkan pengiriman pesan melalui telegraf dan radio, dengan kombinasi pesan titik dan garis. Yuk, ketahui sejarah sandi morse, penemu, dan rumusnya di artikel ini!</em></p>
</blockquote>
<p style="text-align: center;"><em>—</em></p>
<p> </p>
<p style="text-align: justify;">Siapa hayo yang sering menggunakan kode untuk berkomunikasi untuk sang gebetan? Ternyata, penggunaan sebuah kode untuk komunikasi telah lama digunakan, <em>lho! </em>Salah satunya adalah sandi morse.</p>
<p style="text-align: justify;">Sandi morse ini sebenarnya bukan untuk terlihat misterius, apalagi membuat orang penasaran, ya. Kalau kamu pernah ikut pramuka waktu sekolah, pasti udah <em>nggak</em> asing dengan sandi morse. Apa sih sebenarnya yang dimaksud dengan sandi morse? Yuk, kita bahas!</p>
<p> </p>
<h2 style="text-align: justify; font-size: 20px;"><span style="font-size: 18pt;"><strong>Pengertian Sandi Morse</strong></span></h2>
<p style="text-align: justify;">Sandi morse sering disebut juga dengan kode morse. Menurut Kamus Besar Bahasa Indonesia (KBBI), <strong>sandi morse adalah</strong> <strong>kode berupa titik dan garis sebagai pengganti huruf, angka, dan tanda baca</strong> yang digunakan pada pengiriman dan penerimaan berita telekomunikasi.</p>
<p style="text-align: justify;">Dengan kata lain sandi morse adalah metode penyampaian pesan lewat bentuk atau syarat, titik dan garis untuk mewakili huruf, angka, dan tanda baca. Jadi, garis (-) dan titik (.) ini nantinya akan membentuk kombinasi pola sesuai pesan yang ingin disampaikan.</p>
<p style="text-align: justify;">Bunyi yang dihasilkan oleh simbol garis adalah bunyi panjang. Sementara simbol titik, bunyi yang dihasilkannya adalah bunyi pendek.</p>
<p style="font-weight: normal; text-align: justify;">Walau zaman sudah semakin modern, penggunaan sandi morse masih banyak digunakan, loh. Sandi morse sering kali digunakan untuk memberikan sinyal “SOS” (…—…). Sinyal “SOS” merupakan suatu sinyal yang digunakan untuk memberikan tanda bahaya. Sinyal ini sudah disepakati dalam berbagai perjanjian maritim internasional.</p>
<p style="font-weight: normal; text-align: justify;">Nah, beberapa sinyal dari sandi morse ini sudah banyak disepakati oleh negara-negara di dunia, terutama yang berhubungan dengan dunia kelautan, <em>guys.</em></p>
<p style="text-align: justify; font-weight: bold;">Baca Juga: <a href="/blog/penemu-radio" target="_blank" rel="noopener">Benarkah Guglielmo Marconi Penemu Radio yang Sebenarnya?</a></p>
<p> </p>
<h2 style="font-size: 20px;"><span style="font-size: 18pt;">Sejarah dan Penemu Sandi Morse</span></h2>
<p style="text-align: justify;"><img decoding="async" style="width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Samuel%20FB%20Morse.jpg" alt="Samuel FB Morse - penemu sandi morse" width="500" /></p>
<p style="text-align: center;">Samuel F.B. Morse dan telegraf. (sumber: britannica.com)</p>
<p> </p>
<p style="text-align: justify;"><strong>Sandi Morse ditemukan oleh seorang seniman Amerika Serikat pada Tahun 1833</strong>, bernama Samuel F.B. Morse. Awalnya, sandi morse digunakan pada telegraf untuk memudahkan penyampaian pesan. Pengiriman pesan sebelumnya yang menggunakan sebuah kompas penunjuk angka dan huruf di telegraf dinilai tidak praktis.</p>
<p style="text-align: justify;">Sandi morse dianggap lebih efektif karena bisa ditransmisikan ke dalam bentuk detak sinyal elektrik di telegraf, ataupun sinyal mekanik, serta bisa juga dalam bentuk visual, seperti cahaya. Jadi, selain melalui telegraf, sandi morse banyak digunakan di berbagai media lain seperti senter, asap, dan lainnya.</p>
<p style="text-align: justify;">Namun, sandi morse temuan samuel ini masih dirasa kurang praktis untuk digunakan dalam skala internasional, maka pada tahun 1851 sebuah konferensi di Eropa tepatnya di Berlin merumuskan ulang rumus sandi morse dan kita gunakan sampai sekarang formulanya.</p>
<p style="text-align: justify;">Dalam rumusan baru ini semua panjang garisnya sama dan <em>nggak</em> ada spasi penghubung dalam rumusan satu karakter. Jadi, jauh lebih mudah untuk diingat.</p>
<p style="text-align: justify;"><img decoding="async" style="width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Fakta%20Seru%20-%20Sejarah%20Sandi%20Morse-03%20(1).jpg" alt="Perbedaan Kode Morse Amerika Serikat dan Internasional, Beserta Artinya" width="600" /></p>
<p style="text-align: center;">Perbedaan kode morse versi Amerika dan Internasional.</p>
<p> </p>
<p style="text-align: justify;"><em>Nah, </em>penggunaan sandi morse banyak dipakai untuk komunikasi radio pada kapal waktu perang dunia kedua, perang Vietnam, dan perang Korea. Beberapa radio amatir waktu tahun 1990 masih banyak yang memakai sandi morse.</p>
<p style="text-align: justify;">Sampai sekarang, kalau ada keadaan darurat atau bencana, sandi morse juga masih digunakan, yang paling sering adalah “…—…” yang artinya “SOS”.</p>
<p style="text-align: justify; font-weight: bold;">Baca Juga: <a href="/blog/macam-macam-sandi-pramuka-contohnya" target="_blank" rel="noopener">Macam-Macam Sandi Pramuka & Contohnya yang Sering Digunakan</a></p>
<p> </p>
<h2><span style="font-size: 18pt;">Rumus Sandi Morse</span></h2>
<p>Berikut rumus sandi morse yang bisa kamu ketahui:</p>
<p> </p>
<h3><span style="font-size: 14pt;">Huruf Sandi Morse</span></h3>
<p>A = • –<br />
B = – • • •<br />
C = – • – •<br />
D = – • •<br />
E = •<br />
F = • • – •<br />
G = – – •<br />
H = • • • •<br />
I = • •<br />
J = • – – –<br />
K = – • –<br />
L = • – • •<br />
M = – –<br />
N = – •<br />
O = – – –<br />
P = • – – •<br />
Q = – – • –<br />
R = • – •<br />
S = • • •<br />
T = –<br />
U = • • –<br />
V = • • • –<br />
W = • – –<br />
X = – • • –<br />
Y = – • – –<br />
Z = – – • •</p>
<p> </p>
<h3><span style="font-size: 14pt;">Angka Sandi Morse</span></h3>
<p>1 = • – – – –<br />
2 = • • – – –<br />
3 = • • • – –<br />
4 = • • • • –<br />
5 = • • • • •<br />
6 = – • • • •<br />
7 = – – • • •<br />
8 = – – – • •<br />
9 = – – – – •<br />
0 = – – – – –</p>
<p> </p>
<h3><span style="font-size: 14pt;">Tanda Baca Sandi Morse</span></h3>
<p>. = • – • – • –<br />
, = – – • • – –<br />
: = – – – • • •<br />
– = – • • • • –<br />
/ = – • • – •</p>
<p> </p>
<h2 style="text-align: justify; font-size: 20px;"><span style="font-size: 18pt;"><strong>Manfaat Sandi Morse</strong></span></h2>
<p style="text-align: justify;">Setelah memahami pengertian dan menyimak sejarah singkat sandi morse, saatnya kita membahas manfaat sandi morse. Apa saja sih <strong>manfaat sandi morse</strong> selain sebagai kode “SOS”? Nah, beberapa manfaat sandi morse, di antaranya:</p>
<p> </p>
<h3 style="font-weight: normal;"><span style="font-size: 14pt;"><strong>1. Sebagai media komunikasi</strong></span></h3>
<p style="text-align: justify;">Manfaat utama sandi morse adalah sebagai media komunikasi, terutama <strong>komunikasi dengan jarak yang berjauhan</strong>. Sampai saat ini sandi morse sering digunakan dalam keadaan darurat atau bahaya.</p>
<p style="text-align: justify;">Sinyal “SOS” akan dikirimkan menggunakan sandi morse untuk memanggil bantuan. Selain itu, sandi morse juga masih sering digunakan dalam <strong>dunia kelautan nasional maupun internasional</strong>.</p>
<p> </p>
<h3 style="font-weight: normal;"><span style="font-size: 14pt;"><strong>2. Dipakai pada telegraf</strong></span></h3>
<p style="text-align: justify;">Apabila membahas sandi morse, tentu tidak lepas dari telegraf. Seperti yang sudah dibahas di atas, awal muda kemunculan sandi morse digunakan untuk <strong>menyampaikan pesan melalui telegraf</strong>.</p>
<p style="text-align: justify;">Dengan adanya sandi morse, telegraf bisa berfungsi dengan baik. Pesan yang dikirim melalui telegraf dengan sandi morse akan diterima dengan baik oleh penerima pesan. Pada zaman dahulu, militer juga menggunakan telegraf dengan sandi morse untuk mengirim dan menerima pesan.</p>
<p> </p>
<h3 style="font-weight: normal;"><span style="font-size: 14pt;"><strong>3. Digunakan pada kegiatan pramuka</strong></span></h3>
<p style="text-align: justify;">Siapa di sini yang aktif ikut pramuka di sekolahnya? Buat kalian yang aktif jadi anak pramuka pastinya sudah familiar dong dengan sandi morse. Dalam kegiatan pramuka, sandi morse menjadi salah satu sandi paling umum dipelajari. Biasanya, <strong>sandi morse dalam pramuka akan digunakan menggunakan peluit</strong>.</p>
<p> </p>
<h3 style="font-weight: normal;"><span style="font-size: 14pt;"><strong>4. Untuk menyampaikan pesan rahasia</strong></span></h3>
<p style="text-align: justify;">Seperti sandi lainnya, sandi morse juga berfungsi untuk mengirim pesan rahasia. Pesan rahasia yang dimaksud adalah pesan yang hanya bisa dibaca oleh orang-orang tertentu saja.</p>
<p style="text-align: justify;">Nah, penyampaian pesan rahasia dengan sandi morse biasanya hanya <strong>digunakan dalam bidang intelegensi</strong>. Sandi-sandi morse yang digunakan hanya diketahui oleh kelompok-kelompok yang sudah saling sepakat<em>. Wih,</em> keren sekali yah!</p>
<p> </p>
<h2 style="font-size: 20px;"><span style="font-size: 18pt;">Cara Menghafal Sandi Morse dengan Cepat</span></h2>
<p style="text-align: justify;">Kayaknya menghafal sandi morse persatu karakter cukup sulit ya? Tapi tenang aja, ada cara mudahnya, kok. Yuk, kita coba pelajari rumusnya!</p>
<p style="text-align: justify;">Pertama, kamu harus ingat simbol huruf vokalnya nih, seperti A, I, U, E, dan O. Nah, tanamkan dalam pikiran kalau bertemu huruf vokal A, I, U, dan E, berarti melambangkan titik, sedangkan O adalah garis.</p>
<p style="text-align: justify;">Kedua, kamu harus menghafal kata-kata unik di bawah ini, di mana huruf awalnya melambangkan huruf yang akan diubah ke dalam sandi morse:</p>
<p style="text-align: justify;">A: Ano ._</p>
<p style="text-align: justify;">B: Bonaparte -…</p>
<p style="text-align: justify;">C: Coba-coba -.-.</p>
<p style="text-align: justify;">D:Dominan -..</p>
<p style="text-align: justify;">E: Egg .</p>
<p style="text-align: justify;">F: Father Johan ..-.</p>
<p style="text-align: justify;">G: Golongan –.</p>
<p style="text-align: justify;">H: Himalaya ….</p>
<p style="text-align: justify;">I: Islam ..</p>
<p style="text-align: justify;">J: Jago Loro .—</p>
<p style="text-align: justify;">K: Komando -.-</p>
<p style="text-align: justify;">L: Lemonade .- ..</p>
<p style="text-align: justify;">M: Motor —</p>
<p style="text-align: justify;">N: Notes -.</p>
<p style="text-align: justify;">O: Otomo —</p>
<p style="text-align: justify;">P: Pertolongan .–.</p>
<p style="text-align: justify;">Q: Qomokaro –.-</p>
<p style="text-align: justify;">R: Rasohe .-.</p>
<p style="text-align: justify;">S: Sahara …</p>
<p style="text-align: justify;">T: Tong –</p>
<p style="text-align: justify;">U: Unesco ..-</p>
<p style="text-align: justify;">V: Versikaro …-</p>
<p style="text-align: justify;">W:Winoto .–</p>
<p style="text-align: justify;">X: Xoxendero -..-</p>
<p style="text-align: justify;">Y: Yosimoto -.–</p>
<p style="text-align: justify;">Z: Zoroaster –.</p>
<p style="text-align: justify;">Kita ambil contoh misalnya huruf ‘Q’, kata uniknya adalah ‘qomokaro’. Jika kita lihat huruf vokalnya dari depan, maka akan tersisa ‘OOAO’. Ingat huruf vokal selain ‘O’ adalah titik dan ‘O’ adalah garis, berarti ‘Q‘ adalah ‘–.-‘ dalam bentuk sandi morse. Bisa juga coba huruf lain dengan rumus ini, mudah bukan?</p>
<p style="text-align: justify; font-weight: bold;">Baca Juga: <a href="/blog/penemu-telepon" target="_blank" rel="noopener">Alexander Graham Bell dan Penemu Telepon ‘Lainnya’</a></p>
<p style="text-align: justify;"><img decoding="async" style="width: 500px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/wheel-of-fortune-wof.gif" alt="quiz sandi morse" width="500" /></p>
<p style="text-align: center;">Quiz time (Sumber: tenor.com)</p>
<p> </p>
<h2 style="text-align: justify; font-size: 20px; font-weight: bold;"><span style="font-size: 18pt;">Contoh Kalimat Sandi Morse</span></h2>
<p style="text-align: justify;">Sekarang kita main tebak-tebakan yuk, guys. Coba nih apa arti dari contoh kalimat sandi morse di bawah ini?</p>
<p style="text-align: justify;">.- -.- ..- / … . -… . -. .- .-. -. -.– .- / … ..- -.- .- / … .- — .- / -.- .- — ..-</p>
<ol style="list-style-type: upper-alpha;">
<li aria-level="1">Aku sebenarnya sedang sibuk memikirkanmu</li>
<li aria-level="1">Aku sebenarnya adalah pahlawan bertopeng</li>
<li aria-level="1">Aku sebenarnya suka sama kamu</li>
</ol>
<p> </p>
<p> </p>
<p style="text-align: justify;">– — .-.. — -. –. / .- -.- ..- / -.. .- .-.. .- — / -… .- …. .- -.– .-</p>
<ol style="list-style-type: upper-alpha;">
<li aria-level="1">Tolong buka pintu sekarang</li>
<li aria-level="1">Tolong aku dalam bahaya</li>
<li aria-level="1">Tolong aku sedang kesulitan</li>
</ol>
<p> </p>
<p> </p>
<p style="text-align: justify;">-. . -. . -.- / -. .- .. -.- / –. . – . -.-</p>
<ol style="list-style-type: upper-alpha;">
<li aria-level="1">Nenek naik getek</li>
<li aria-level="1">Nenek naik becak</li>
<li aria-level="1">Nenek naik mobil</li>
</ol>
<p> </p>
<p> </p>
<p style="text-align: center;">—</p>
<p style="text-align: justify;">Yeay! Gimana? Seru kan bahasan kita kali ini! Kamu jadi tau sejarah dan siapa tokoh penemu sandi morse. Kalau kamu mau tau lebih banyak tokoh penemu/biografi ilmuwan lainnya, bisa lhoo cekicek <a style="font-weight: bold;" href="/blog/tag/fakta-seru" target="_blank" rel="noopener">di sini!</a></p>
<p style="text-align: justify;">Ingin lebih banyak memecahkan berbagai kebingungan? Ternyata banyak rumus lain lho yang bisa memecahkan beragam persoalan. Yuk! coba belajar bersama kami di <a href="https://www.ruangguru.com/ruangbelajar" target="_blank" rel="noopener"><strong>ruangbelajar</strong></a>. Jangankan memecahkan kode morse, memecahkan rumus matematika yang njelimet sekalipun jadi lebih mudah kok!</p>
<p style="text-align: justify;"><a href="https://bayar.ruangguru.com/"><img decoding="async" class="aligncenter size-medium" src="https://cdn-web-2.ruangguru.com/landing-pages/assets/ceb472c4-1feb-4a1d-afdf-4f92234a63d0.jpg" alt="CTA Ruangguru" /></a></p>
<p style="text-align: justify;"><strong>Referensi:</strong></p>
<p style="text-align: left;">Rafferty, J.P. (2020) ‘Morse Code’, Encyclopedia Britannica, 18 September 2020 [online]. Tautan: https://www.britannica.com/topic/Morse-Code (diakses 3 November 2021)</p>
<p style="text-align: left;">Akmal. (2020) ‘Cara Mudah Menghafal Morse, Yang Mengaku Anak Pramuka Wajib Tau nih!’, Sijai, 31 Mei 2020 [online]. Tautan: sijai.com/cara-mudah-menghafal-morse/ (diakses 4 November 2021)</p>
<p style="font-weight: bold; text-align: left;">Sumber Foto:</p>
<p>Encyclopædia Britannica. (2021) Samuel F.B. Morse with a model of the telegraph, engraving [online]. Tautan: https://www.britannica.com/biography/Samuel-F-B-Morse#/media/1/393059/143675 (diakses 3 November 2021)</p>
<p style="text-align: left;">Encyclopædia Britannica. (2020) American patterns dots International Morse Code letters [online]. Tautan: <span style="font-size: 16px;">https://www.britannica.com/topic/Morse-Code#/media/1/393067/61523<span style="color: #1a1a1a;"> (diakses 3 November 2021)</span></span></p>
<p style="text-align: left;">Wheel Of Fortune Wof GIF by lrducky1331 [online] tautan: tenor.com/view/wheel-of-fortune-wof-wheel-game-show-jeopardy-gif-18418456 (diakses 3 november 2021)</p>
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<li><a href="https://www.kalananti.id/" target="_blank">Kalananti</a></li>
</ul>
</nav>
</div>
<div class="col-6 col-md-3">
<nav class="footer-menu">
<p class="title"> Coba GRATIS Aplikasi Ruangguru</p>
<div class="download-list">
<ul>
<li>
<a target="_blank" rel="nofollow" href="https://apps.apple.com/id/app/ruangguru-solusi-belajar/id1099742206?l=id">
<img src="https://cdn-web-2.ruangguru.com/static/appstore.png" loading="lazy" alt="Button App Store Footer " />
</a>
</li>
<li>
<a target="_blank" rel="nofollow" href="https://play.google.com/store/apps/details?id=com.ruangguru.livestudents&hl=in">
<img src="https://cdn-web-2.ruangguru.com/static/googleplay.png" loading="lazy" alt="Button Google Play Footer " />
</a>
</li>
<li>
<a target="_blank" rel="nofollow" href="https://appgallery.huawei.com/#/app/C102352375">
<img src="https://cdn-web-2.ruangguru.com/static/huawei.png" loading="lazy" alt="Button AppGallery Footer " />
</a>
</li>
</ul>
</div>
</nav>
</div>
</div>
</div>
</div>
<div class="d-lg-none text-center">
<nav class="footer-menu social">
<p class="title">Ikuti Kami</p>
<a target="_blank" href="https://www.instagram.com/ruangguru/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/instagram.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/instagram.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/instagram.png" loading="lazy" alt="Logo Instagram Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.facebook.com/ruanggurucom/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/facebook.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/facebook.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/facebook.png" loading="lazy" alt="Logo Facebook Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://twitter.com/ruangguru/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/twitter.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/twitter.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/twitter.png" loading=" lazy" alt="Logo Twitter Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.youtube.com/ruangguru">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/youtube.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/youtube.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/youtube.png" loading=" lazy" alt="Logo Youtube Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.linkedin.com/company/ruangguru-com">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/linkedin.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/linkedin.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/linkedin.png" loading=" lazy" alt="Logo LinkedIn Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.tiktok.com/@ruangguru">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/tiktok.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/tiktok.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/tiktok.png" loading=" lazy" alt="Logo TikTok Footer" width="32px" height="32px" />
</picture>
</a>
</nav>
</div>
<p class="footer-copyright">
© 2026 All Rights Reserved PT. Ruang Raya Indonesia
</p>
</div>
<style>
.bantuan-container {
position: relative;
}
.bantuan-element {
position: fixed;
z-index: 999;
display: flex;
align-items: flex-end;
justify-content: flex-end;
cursor: pointer;
transition: all 0.6s ease;
}
.bantuan-top {
bottom: 11rem;
right: 2rem;
}
.bantuan-bottom {
bottom: 2rem;
right: 2rem;
}
.bantuan-top-2 {
bottom: 15rem;
right: 2rem;
}
.bantuan-top-3 {
bottom: 19rem;
right: 2rem;
}
.bantuan-bottom-2 {
bottom: 5rem;
right: 2rem;
}
.bantuan-bottom-3 {
bottom: 8rem;
right: 2rem;
}
@media (min-width: 768px) {
.bantuan-element img {
width: auto;
transition: all 0.4s ease;
}
.bantuan-top img {
width: 140px;
}
.bantuan-bottom img {
width: 140px;
}
.bantuan-top-2 img,
.bantuan-top-3 img {
width: 140px;
}
.bantuan-bottom-2 img,
.bantuan-bottom-3 img {
width: 140px;
}
.bantuan-element.clicked {
bottom: 9rem;
right: 2.5rem;
}
.bantuan-element.clicked img {
width: auto;
height: 64px;
}
}
@media (max-width: 767px) {
.bantuan-top {
bottom: 8rem;
right: 1rem;
align-items: center;
}
.bantuan-bottom {
bottom: 2rem;
right: 1.25rem;
align-items: center;
}
.bantuan-top-2 {
bottom: 12rem;
right: 1rem;
align-items: center;
}
.bantuan-top-3 {
bottom: 16rem;
right: 1rem;
align-items: center;
}
.bantuan-bottom-2 {
bottom: 5rem;
right: 1.25rem;
align-items: center;
}
.bantuan-bottom-3 {
bottom: 8rem;
right: 1.25rem;
align-items: center;
}
.bantuan-element img {
width: auto;
}
.bantuan-top img,
.bantuan-top-2 img,
.bantuan-top-3 img {
width: 96px;
}
.bantuan-bottom img,
.bantuan-bottom-2 img,
.bantuan-bottom-3 img {
width: 96px;
}
}
.bantuan-element:hover {
transform: scale(1.05);
}
.bantuan-element img {
max-width: 100%;
height: auto;
}
</style>
<div id="bantuan-divs-container" style="position: relative" data-product="ruangguru" data-table="rg_floating_icon"></div>
<script>
class FloatingDivsComponent {
constructor(product = 'ruangguru', table = 'rg_floating_icon') {
this.container = document.getElementById('bantuan-divs-container');
this.floatingElements = [];
this.product = product;
this.table = table;
// Configuration
this.config = {
baseApiUrl: 'https://gw.ruangguru.com/api/v3/rdb/p_ddgy8hjx5dxsqx/rg_banner/views/',
apiKey: 'vLyK3dJrDBRmOwueX2OJXibMkgsUbBk0WS4ua2p1',
maxElements: 2,
zIndexBase: 100,
};
// Build dynamic API URL based on table parameter
this.config.apiUrl = this.buildApiUrl();
this.init();
}
buildApiUrl() {
const baseUrl = this.config.baseApiUrl;
const tableName = this.table || 'rg_floating_icon';
const queryParams =
'offset=0&limit=99999&sort=rankPosition&where=(type,eq,floating)~and(showIn,anyof,blog)~and(hide,is,false)~and(product,eq,' +
this.product +
')&nested%5Bcta%5D%5Bfields%5D=Id,name,ctaId,imageUrl,ctaLink,targetUrl';
return `${baseUrl}${tableName}?${queryParams}`;
}
async init() {
try {
await this.fetchFloatingElements();
this.renderFloatingElements();
} catch (error) {
console.error('Failed to initialize floating divs component:', error);
}
}
async fetchFloatingElements() {
try {
const options = {
method: 'GET',
headers: {
'xc-token': this.config.apiKey || 'vLyK3dJrDBRmOwueX2OJXibMkgsUbBk0WS4ua2p1',
},
};
const urlNoco = this.config.apiUrl;
const response = await fetch(urlNoco, options);
if (!response.ok) {
throw new Error(`HTTP error! status: ${response.status}`);
}
const data = await response.json();
this.floatingElements = this.processApiResponse(data);
} catch (error) {
console.error('Error fetching floating elements:', error);
throw error;
}
}
processApiResponse(data) {
if (!data || !data.list || !Array.isArray(data.list)) {
return [];
}
console.log(data.list);
// Ensure we only get maximum 2 elements
const limitedElements = data.list.slice(0, this.config.maxElements);
return limitedElements;
}
renderFloatingElements() {
if (!this.container || this.floatingElements.length === 0) {
return;
}
// Additional safeguard: ensure we never render more than maxElements
const elementsToRender = this.floatingElements.slice(0, this.config.maxElements);
// Clean up existing elements and their event listeners
this.cleanupExistingElements();
// Clear existing content
this.container.innerHTML = '';
elementsToRender.forEach((element, index) => {
const floatingDiv = this.createFloatingDiv(element, index);
this.container.appendChild(floatingDiv);
});
}
cleanupExistingElements() {
// Clear existing elements (no need for event listener cleanup with CSS approach)
const existingElements = this.container.querySelectorAll('[data-floating-element]');
existingElements.forEach(element => {
element.remove();
});
}
createFloatingDiv(element, index) {
const div = document.createElement('div');
const cta = element.cta[0]; // Use the first CTA
// Add data attribute for cleanup tracking
div.setAttribute('data-floating-element', 'true');
// Apply CSS classes based on rankPosition
const positionClass = this.getPositionClass(element.rankPosition, index);
div.className = `bantuan-element ${positionClass}`;
div.style.zIndex = this.config.zIndexBase + index;
// Create the link and image
const link = document.createElement('a');
link.href = 'https://cta.ruangguru.com/' + cta.ctaId || '#';
link.target = '_blank';
// Add tracking attributes
link.setAttribute('data-tracking-event-type', 'landing_page__core__item_click');
link.setAttribute(
'data-tracking-context',
JSON.stringify({
product_name: this.product,
cta_action: 'redirection',
cta_action_detail: link.href,
item_type: 'floating',
item_name: element.name || 'Floating element',
item_category: 'payment',
item_position: index,
item_serial: null,
section_type: 'floating_item',
section_position: 'body',
section_name: 'floating_item',
})
);
const img = document.createElement('img');
img.src = element.imageUrl + '?h=200&convert=webp';
img.alt = element.name || 'Floating element';
img.loading = 'lazy';
// Add click tracking
link.addEventListener('click', () => {
this.trackClick(element, cta);
});
link.appendChild(img);
div.appendChild(link);
return div;
}
getPositionClass(rankPosition, index) {
// Define positioning classes based on rankPosition
if (rankPosition === 1) {
return 'bantuan-top'; // Top position
} else if (rankPosition === 2) {
return 'bantuan-bottom'; // Bottom position
} else {
// For additional elements, distribute them evenly
return `bantuan-${index % 2 === 0 ? 'top' : 'bottom'}-${Math.floor(index / 2) + 1}`;
}
}
trackClick(element, cta) {
// Implement click tracking logic here
console.log('Floating element clicked:', {
elementId: element.Id,
elementName: cta.name,
ctaId: cta.ctaId,
targetUrl: cta.targetUrl,
});
}
// Public method to manually refresh
async refresh() {
try {
await this.fetchFloatingElements();
this.renderFloatingElements();
} catch (error) {
console.error('Failed to refresh floating elements:', error);
throw error;
}
}
// Public method to get current floating elements
getFloatingElements() {
return [...this.floatingElements];
}
}
// Initialize the component when DOM is ready
document.addEventListener('DOMContentLoaded', () => {
// Get product and table parameters from data attributes
const container = document.getElementById('bantuan-divs-container');
const product = container.getAttribute('data-product') || 'ruangguru';
const table = container.getAttribute('data-table') || 'rg_floating_icon';
new FloatingDivsComponent(product, table);
});
// Export for use in other modules if needed
if (typeof module !== 'undefined' && module.exports) {
module.exports = FloatingDivsComponent;
}
</script> <div id="wp-install-nudge" style="
position: fixed;
bottom: 0rem;
right: 0;
z-index: 999;
cursor: pointer;
"></div>
<script>
(function (w, d, s, o, f, js, fjs) {
w['Sales-Nudge-Widget'] = o; w[o] = w[o] || function () { (w[o].q = w[o].q || []).push(arguments) };
js = d.createElement(s), fjs = d.getElementsByTagName(s)[0];
js.id = o; js.src = f; js.async = 1; fjs.parentNode.insertBefore(js, fjs);
}(window, document, 'script', 'wpInstallNudge', 'https://cdn-web-2.ruangguru.com/sales-nudge/6198a95130/dist/widget.js'));
wpInstallNudge('init', { targetElementId: 'wp-install-nudge', clientTarget: 'ruangguru_blog' });
</script>
<script>
// note: disabled due to auto reload page
// var lastScrollTop = 0;
// $(window).scroll(function(event){
// var st = $(this).scrollTop();
// if (st > lastScrollTop){
// $('#wp-install-nudge').slideDown( "slow", function() {});
// } else {
// $('#wp-install-nudge').slideUp( "slow", function() {});
// }
// lastScrollTop = st;
// });
// $(document).ready(function () {
// $("#wp-install-nudge").hide();
// });
$('#wp-install-nudge').click(function(){
Analytics.track("promotion__install_nudge__click",
{
user_email: "ruangguru@blog.com",
cta_link: widgetData.dataConfig.target_link
}).catch((err) => {
console.log("tracker error", err);
});
});
</script>
</footer>
<div id="__next"></div>
<script type="speculationrules">
{"prefetch":[{"source":"document","where":{"and":[{"href_matches":"\/blog\/*"},{"not":{"href_matches":["\/blog\/wp-*.php","\/blog\/wp-admin\/*","\/blog\/wp-content\/uploads\/*","\/blog\/wp-content\/*","\/blog\/wp-content\/plugins\/*","\/blog\/wp-content\/themes\/ruangguru\/*","\/blog\/*\\?(.+)"]}},{"not":{"selector_matches":"a[rel~=\"nofollow\"]"}},{"not":{"selector_matches":".no-prefetch, .no-prefetch a"}}]},"eagerness":"conservative"}]}
</script>
<script>
async function getCtaDetails(ctaIds) {
const endpoint =
" https://gw.ruangguru.com/api/v3/rdb/p_ddgy8hjx5dxsqx/CTA/views/CTA?offset=0&limit=10&where=(ctaId,in," + ctaIds.toString() + ")";
try {
const response = await fetch(endpoint, {
headers: {
"xc-token": "-hG2nBDJzSj0agSgNtcJx97M4F02y54nUMoY6plJ",
},
});
const data = await response.json();
const ctaList = data?.list || [];
const ctaMap = new Map();
for (const ctaData of ctaList) {
ctaMap.set(ctaData.ctaId, ctaData);
}
return ctaMap;
} catch (error) {
console.error("Error fetching CTA details:", error);
return new Map();
}
}
async function replaceCTA() {
const regex = /{{cta\((‘(.*?)’|“(.*?)”)\)}}/g;
const bodyHTML = document.body.innerHTML;
const matches = Array.from(bodyHTML.matchAll(regex));
const ctaIds = matches.map((match) => {
let ctaId = match[2] ?? match[3];
return ctaId;
});
const ctaMap = await getCtaDetails(ctaIds);
const replacedHTML = bodyHTML.replace(regex, (match, _inner, ctaId1, ctaId2) => {
const ctaId = ctaId1 ?? ctaId2;
const ctaData = ctaMap.get(ctaId);
if (ctaData) {
return `<a href="https://cta.ruangguru.com/${ctaData.ctaId}" target="_${ctaData.targetType}" style="position:relative;display:inline-block;">
<img src="${ctaData.imageUrl}" loading="lazy" alt="${ctaData.altText}" />
</a>`;
} else {
return match;
}
});
document.body.innerHTML = replacedHTML;
}
</script>
<meta name="author" content="Ruangguru Tech Team">
<!-- Google Tag Manager (noscript) -->
<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-PVNLZFT" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
<!-- Tracker -->
<script type="text/javascript" src="https://cdn-web-2.ruangguru.com/landing-page-web/public/staticpages/global-assets/js/cta.js"></script>
<script src="https://unpkg.com/@dotlottie/player-component@latest/dist/dotlottie-player.mjs" type="module"></script>
</body>
</html>