Morse code, also known as CW (Continuous Wave) began in 1836 by Samuel F. B. Morse and Alfred Vail. They developed an electric telegraph, which sent pulses of electrical current to control an electromagnet that was located at the receiving end of the telegraph wire. Code has been in use for more than 160 years, making it the longest electronic encoding system in use to date.
Morse code is most popular among amateur radio operators although it is no longer required for licensing in most countries. Pilots and air traffic controllers also use Morse code and require a basic understanding. Aeronautical navigational aids, such as VORs and NDBs, constantly identify in Morse code.
This page lists all films that feature morse code.