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, TMC0537, TMC0538. TMC0599 |
| Logic: | AOS - 7 Pending Operations, 9 () | Displays: | DIS234G |
| Memories: | 10 | ||
| Program steps: | 100 | Courtesy of: | Joerg Woerner |
| Download manual: | 
(US: 15.0M Bytes)
(US: 13.1M Bytes)
(US: 26.8M Bytes) |
Introduced
only few month after the SR-52 Programmable, the
SR-56 could be considered its small brother. The housing
looks identical to the SR-50A Scientific Calculator and
SR-51A Statistical Calculator,
only the [LRN] key reveals its true capabilities. Well, Texas Instruments'
Marketing Team added at least a few months after the introduction of the
original SR-56 the word "Programmable" under the SR-56 logo.
Dismantling
an SR-56 "Programmable" with Date code
0577 RCI and manufactured in February 1977 in Rieti, Italy with an SR-56 with
Date code 4976 RCI and assembled just 8 weeks earlier on the same production
line reveals no differences between the products.
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.