Texas Instruments SR-10 Version 3

Date of introduction:  1975 Display technology:  LED modules + lens
New price:   Display size:  8 + 2
Size:  6.3" x 3.1" x 1.5"
 158 x 78 x 38 mm3
Weight:  9.2 ounces, 262 grams Serial No:  989963
Batteries:  3*AA NiCd Date of manufacture:  wk 22 year 1975
AC-Adapter:  AC9130 Origin of manufacture:  USA
Precision:  8 Integrated circuits:  TMS0120
Program steps:   Courtesy of:  Joerg Woerner
    Download manuals:   (US: 4.0M Bytes)
  (US: 3.2M Bytes)
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SR-10_PCB3.jpg (138045 Byte)The SR-10 Version 3 uses different electronics than the predecessor SR-10 Version 2. The segment drivers were removed and the driver of the TMS0120 calculator chip used. This was a result of red LED displays with higher efficiency. The power supply was changed to an integrated version. These changes were introduced shortly before the calculator was discontinued. 

Compare the SR-10 Version 3 with a SR-16 from the same timeframe.

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Joerg Woerner, July 5, 2002. No reprints without written permission.