DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments SR-10 (Italy - Version 1A)
| Date of introduction: | 1973 | 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: | 013558 |
| Batteries: | 3*AA NiCd | Date of manufacture: | wk 32 year 1973 |
| AC-Adapter: | AC9900 | Origin of manufacture: | Italy |
| Precision: | 8 | Integrated circuits: | TMS0120, 2*SN27422, 2*SN27423 |
| Logic: | Chain | Displays: | DIS115 (12*DISXXX) |
| Memories: | |||
| Program steps: | Courtesy of: | Joerg Woerner | |
| Download manuals: | 
(US: 4.0M Bytes)
(US: 3.2M Bytes)
(US: 2.6M Bytes) |
This
SR-10 manufactured in Italy for the European market looks with its printed SR-10
logo different to the US
versions. The US market knows a total of four different versions that could be
easily distinguished, this Italian SR-10 resembles an SR-10 Version 1 - Display
2:
| Version | Position of SR-10 logo |
Display Type |
Display Driver |
| SR-10 USA V1 | Display frame | 6-digit modules without lens |
4 ICs |
| SR-10 USA V1D2 | Display frame | single modules with lens |
4 ICs |
| SR-10 Italy | Display frame | single modules with lens |
4 ICs |
| SR-10 USA V2 | Keyboard | single modules with lens |
4 ICs |
| SR-10 USA V3 | Keyboard | single modules with lens |
2 ICs |
Here at the Datamath Calculator Museum we classify the featured SR-10 as Display Frame Version 1 (Italy), PCB Type 2 and Display Type 2.
Dismantling
this SR-10 reveals a printed circuit board (PCB) identical to the with the SR-10
Version 2 of the US market.
In
the meantime we discovered even an Italian built SR-10
using the original SR-10 Version 1 housing.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, February 20, 2003. No reprints without written permission.