TSI The Telesensory Systems Inc. Speech+ shown here was the first commercial hand-held talking calculator for the blind. Also on this page is a talking calculator aimed as and educational aid for youngs.
This was the first commercial hand-held speaking calculator and a very early use of speech synthesis in a consumer product.
The TSI S14001A was developed by TeleSensory, Inc. and Silicon Systems, Inc. in 1975 as a single-IC speech chip for the Speech+ portable talking calculator for the blind. The speech technology was licensed from Forrest S. Mozer, a professor of atomic physics (speech was a spare time thing for him) at University of California, Berkeley. Ed Bernard worked for Silicon Systems, Inc., and was the design engineer for the S14001A speech chip.
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