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Additional Pictures 

 

Close-up view of the TP0485/CD2901H MCU chip used with the Texas Instruments TI-88 "PVT Build 3" with Serial Number 1073.
CMOS Technology, 40-pin SPDIP 4-bit Microcontroller, 3,072*13 Bits Instruction ROM, 128*13 Bits Fast ROM, 352*4 Bits Data RAM.

Die Photo of the TP0485/CD2901H courtesy of Sean Riddle.

Close-up view of the TP0485/CD2902H MCU chip used with the Texas Instruments TI-88 "PVT Build 3" with Serial Number 1073.
CMOS Technology, 28-pin SPDIP.  3,072*13 Bits Instruction ROM, 128*13 Bits Fast ROM, 352*4 Bits Data RAM.

Die Photo of the TP0485/CD2902H courtesy of Sean Riddle.


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

Joerg Woerner, January 14, 2021. No reprints without written permission.