Additional Pictures 


Close-up view of the TP0458/CD4815 single-chip calculator circuit used with the TI-60 as Slave processor.
CMOS Technology, 40-pin SPDIP 4-bit Microcontroller, 3,048*9 Bits Instruction ROM, 192*4 Bits Data RAM, 64 Bits Display Register.

Die Photo of the TP0458/CD4815 courtesy of Sean Riddle.

If you have additions to the above article please email:

Joerg Woerner, January 28, 2021. No reprints without written permission.