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Additional Pictures 

 

Close-up view of the SN77203 Display Interface Voltage Controller Chip used with the Texas Instruments TI-88 "PVT Build 3" with Serial Number 1073.
Bipolar Technology, 14-pin DIP, 1-cell step-up DC/DC converter, 1-cell inverting DC/DC converter, Low Battery Indicator, bidirectional serial interface.

Die Photo of the SN77203 courtesy of Sean Riddle.


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

Joerg Woerner, January 22, 2021. No reprints without written permission.