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