exactra 19Model: Exactra 19
Battery:  3 x AA

Year: 1974
Chip: TMC0806
Manual: with permission
Info: When The Ohio State University approached Texas Instruments early in Summer 1974 with the demand of Thousands of high quality calculators in the $15.00 to $20.00 range for a Classroom Experiment, they actually initiated the development of this Exactra 19.