Julius Caesar used the Caesar cipher to send secret messages to his generals during his military campains
Messages were delivered across telegraph lines using Morse code.
The Venona Project was a joint American-British counterintelligence program, with the goal of decrypting Soviet intelligence communications.
BASIC (Beginner's All-purpose Symbolic Instruction Code) was developed in 1964 at Dartmouth College by John G. Kemeny and Thomas E. Kurtz.
Perl is a high-level, general-purpose, interpreted, dynamic programming language. It was originally developed by Larry Wall in 1987 as a general-purpose Unix scripting language to make report processing easier.
Ghostscript is a free and open-source software suite for rendering PostScript and PDF files.
The Game Boy is an 8-bit, handheld game console from Nintendo that was released in 1989.
You've found a QEMU image with a pre-configured installation of 9front, a fork of the Plan9 operating system.