DATAMATH CALCULATOR MUSEUM
Texas Instruments TI-1270
|Date of introduction:||April 21, 1976||Display technology:||LED-stick|
|New price:||$18.95||Display size:||8|
|Size:|| 5.5" x 2.8" x 1.4"
138 x 70 x 35 mm3
|Weight:||3.9 ounces, 110 grams||Serial No:||A 64488|
|Batteries:||9V||Date of manufacture:||wk 37 year 1976|
|AC-Adapter:||AC9180||Origin of manufacture:||Italy (RCI)|
|Program steps:||Courtesy of:||Joerg Woerner|
(US: 2.3M Bytes)
(EU: 3.5M Bytes)
colorful TI-1270 was manufactured both in the United
States and Italy, the only differences are the design the of the
Product Labels on the backside of the
Dismantling the featured TI-1270 with Date code 3776 RCI and manufactured in September 1976 in Rieti, Italy reveals a printed circuit board (PCB) identical with the Hardware Version 3 of the TI-1200 and TI-1250 calculators. The only change is the single-chip calculator circuit, we located a TMS0974 instead the TMS0972.
The TMS0970 series is based on the TMS1000, the World's first Microcomputer.
We located recently a TI-1270 sporting a almost red faceplate and manufactured in Italy, too. We are not sure if this color was intended or was simply a quality issue.
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© Joerg Woerner, July 2, 2021. No reprints without written permission.