The BBC Micro Model B, launched in 1981 by Acorn Computers, became one of the most popular microcomputers in British education. It featured a 2 MHz MOS 6502 processor, 32 KB of RAM and a Texas Instruments SN76489 sound chip with three tone channels and one noise channel. It stood out for its graphics, expansion options and catalogue of cassette and floppy-disk games, including the influential Elite (1984).