DATAMATH CALCULATOR MUSEUM
|
DATAMATH CALCULATOR MUSEUM |
Texas Instruments SR-10 Version 2
| Date of introduction: | 1973 | Display technology: | LED modules + lens |
| New price: | $89.99 | 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: | 1023782 |
| Batteries: | 3*AA NiCd | Date of manufacture: | 1974 |
| AC-Adapter: | AC9200, AC9130 | Origin of manufacture: | Brazil |
| Precision: | 8 | Integrated circuits: | TMS0120 |
| Memories: | |||
| Program steps: | Courtesy of: | Joerg Woerner | |
| Download manuals: | 
(US: 4.0 MByte)
(US: 3.2 MByte)
(US: 2.6 MByte) |
The
SR-10 Version 2 could be quite easy distinguished from the SR-10
Version 1: The logo of the first is situated inside the display frame, here
it is on the key plate. More important is the display, the second version used a
magnifier lens mounted onto the LED modules for better readability.
The
printed circuit board (PCB) of the second SR-10 looks very similiar to the
original design and uses still two segment drivers and two digit
drivers for the LED-modules. Recently
some more differences were discovered by Kirk B. Muri, the later SR-10
Version 3 removed one
half of the display drivers.
The SR-10 manufactured in Italy for
the European market introduced a slightly different design of the housing.
The SR-10 was sold with different nameplates, don't miss the Radio Shack EC-425
and the Montgomery Ward
P300.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, December 5, 2001. No reprints without written permission.