HP 27201A, the world’s first speech synthesizer by a major computer company

smbakeryt has written an article on reverse-engineering the protocol used by the HP 27201A: The HP 27201A is a TMS5220 based speech synthesizer released in 1983. According to the HP museum, it’s the first synthesizer designed by a major computer computer. Yes, the TI99/4A’s speech synthesizer uses the same IC and is at least contemporary […]