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Additional Pictures 

 

TI-1250 Version 1, PCB Type 1, TMS0952 (28-pin DIP).
March 1975 - August 1975 (USA).

TI-1250 Version 2, PCB Type 2, TMS0952 (28-pin DIP).
August 1975 - February 1976 (USA).

TI-1250 Version 2 CR, PCB Type 2, TMS0952 (28-pin DIP).
February 1976 (USA).

TI-1250 Version 3, PCB Type 2, TMS0972 (28-pin DIP).
March 1976 - March 1977 (USA).

TI-1250 Version 4, PCB Type 3, TMS0972 (28-pin SPDIP).
April 1977 - May 1977 (USA)/Sept. 1977 (Hong Kong).

 


If you have additions to the above article please email: joerg@datamath.org.

Joerg Woerner, June 27, 2021. No reprints without written permission.