Additional Pictures 


This SR-56 was manufactured in December 1976 by
Texas Instruments in Brazil (Date code CIB 5076 wk 50 yr 1976).

The printed circuit board (PCB) of the TI-30 looks very familiar to us.
The single-chip calculator circuit sports a very uncommon JP0981 designation.

horizontal rule

If you have additions to the above article please email:

Joerg Woerner, November 11, 2009. No reprints without written permission.