| TI SR-40
USA - 1976
Instruments SR-40 - 5076 USA 2200153.
The famous TI-30 was available in a luxury edition under the logo
SR-40. Instead of the simple black keys of the TI-30, it used keys
with molded lettering, and the battery was replaced with a chargeable
Courtesy of: Joerg Woerner
The World of XNumber