Additional Pictures 


This SR-50 was manufactured in December 1974 by
Texas Instruments in the Netherlands (Date code 504 wk 50 yr 1974).

The printed circuit board (PCB) of the SR-50 is centered
around the TMC0501 / TMC0521 building blocks.

The additional PCB found inside the SR-50 with the display drivers,
the LED-display and the keyboard assembly for the keys.

The display bezel of this unique SR-50 calculator
doesn't look like a Do-It-Yourself job.

horizontal rule

If you have additions to the above article please email:

Joerg Woerner, November 1, 2011. No reprints without written permission.