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Additional Pictures 

 

This Radio Shack EC-497 was manufactured in June 1979 by
Texas Instruments in Abilene, TX (Date code ATA 2579 wk 25 yr 1979).

 

The flexible printed circuit board (PCB) of the Radio Shack EC-497.

The TO0321 single-chip calculator circuit known from the TI-50.


horizontal rule

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

Joerg Woerner, May 29, 2016. No reprints without written permission.