Votrax International, Inc.

Votrax International, Inc. was a speech-synthesis-oriented company which originally began as a division of Federal Screw Works, and was called The Vocal Division of Federal Screw Works. In 1980, they split off from their parent company and was given the Votrax name.

1971

 * VS1 - Prototype
 * VS2 - Prototype
 * VS3 - Prototype

1972

 * VS4 - First commercially sold product, sold under the name "Votrax"
 * VS5
 * VS6 - Design prototype

1973

 * VS6

1973 through 1975

 * VS6.1
 * VS6.2
 * VS6.3
 * VS6.G

1975

 * VS6.G2

1977

 * VS6.4

1978

 * ML-1
 * ML-1ES - ML1 with added Spanish phonemes
 * ML-2ES

1978 through 1980

 * VSA
 * SVA
 * VSC
 * VSK
 * VSL - Like the SC-01 but used multiple ICs

1980

 * CDS1 - Emulation of an SC-01 running on a mainframe
 * SC-01

1981

 * SC-01-A - Nearly the same as the SC-01, had a change made to the ROM to make speech clearer

1983

 * SC-02 (aka SSI-263P or Arctic 263)