CHM Revolution

Date Introduced

1974 ca.

Photographer

Fairbairn, Douglas

Dimensions

1 1/4 x 3 1/8 x 5 7/8 in.

Manufacturer

Texas Instruments

Credit Line

Computer History Museum

Location

United States

Keywords

Technical calculation; Pocket size; Electronic calculation

Object ID

102703591

This was Texas Instruments’ early challenge to the HP-35 handheld scientific calculator. The SR-50 cost less than half as much but performed nearly all of the same functions.