CHM Revolution

Date Introduced

1975 ca.

Photographer

Richards, Mark

Dimensions

1 1/4 x 7 1/4 x 4 1/2 in.

Manufacturer

Telesensory Systems, Inc.

Copyright Owner

© Mark Richards

Location

United States

Keywords

Pocket size; Speech synthesis; Electronic calculation

Object ID

102628744

This speaking calculator, designed for the blind, had a 24-word vocabulary. It came with the instruction manual on an audio cassette tape.