DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments SR-56 Programmable
| Date of introduction: | 1976 | Display technology: | LED-stick |
| New price: | $139 | Display size: | 10 + 2 |
| Size: | 5.8" x 3.2" x
1.3" 147 x 81 x 32 mm3 |
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| Weight: | 8.5 ounces, 240 grams | Serial No: | 152051 |
| Batteries: | BP1A | Date of manufacture: | wk 08 year 1977 |
| AC-Adapter: | AC9130A | Origin of manufacture: | USA (LTA) |
| Precision: | 12/13 | Integrated circuits: | TMC0501, TMS0537, TMC0538. TMC0599 |
| Memories: | 10 | ||
| Program steps: | 100 | Courtesy of: | Joerg Woerner |
| Download manual: | 
(US: 15.0 MByte)
(US: 13.1 MByte)
(US: 26.8 MByte) |
Introduced
only few month after the SR-52 programmable, the SR-56
was it's small brother. The housing looked identical to the SR-51A,
only the LRN-key gave you an idea of it's programmability. Compared to the SR-52
it uses only one instead of two memory-chips (the TMC0599), this reduced the
possible program length from 224 steps to 100 steps. Main disadvantage was the
lack of a permanent strage like a card reader or the continuous memory of the
later TI-58C.
This calculator works with both the PC-100 and PC-100A printer cradle.
There are two different versions of the calculator reported, one with and one without the word "Programmable" under the SR-56 logo.
Fellow collectors - if you own a SR-56 please report us the serial number and date code on the back of the calculator for our SR-56 Database.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, December 5, 2001. No reprints without written permission.