|
name
|
built
|
display
|
functions
|
circuit
|
alim
|
description
|
status
|
 |
Texas Instruments Datamath TI-2500 (issue
2) |
73/74, made in Italy |
LED 8+1 digits |
4 + switch chain/const |
TMS0119NC, 2x SN75493N 2x SN75492N
|
4x AA int. ni-cd battery pack, ext 3,5 mm jack
(AC) |
First TI pocket calculator line |
Good, working (with bag and mains charger) |
 |
Texas Instruments Datamath II (TI-2500-II) |
late 74, manufactured in Italy |
LED 8+1 digits with lens |
4op + % |
TMS0803NC, SN27882N, 3 trans |
2x AA (standard or ni-cd), ext 2,5 mm jack (AC) |
Late model of Datamath line |
Good, working |
 |
Texas Instruments TI-2550 |
74, manufactured in Italy |
LED 8 + 1 digits |
4 + % + mem + floating point switch |
TMC0601NC, 2x 75493N, 2x 27924, 5 trans
|
4x AA batt or 3 x ni-cd, ext 3,5 mm jack |
|
Very good, working |
 |
Texas Instruments TI-1500 |
early 75, manufactured in Italy |
LED 8 + 1 digits |
4 + % |
TMS0803NC, SN27882N, 3 trans |
2x AA internal ni-cd, ext plug (+ centre) |
Small and nice |
Very good, working (with charger/adapter) |
 |
Texas Instruments TI-1025 |
nd, assembled in El Salvador |
Fluo 8 digits |
4 + % + mem |
nd
|
9V batt, ext 2,5mm jack |
- |
Sufficient, working |
 |
Texas Instruments TI-1200 |
76, made in Italy |
LED 8 digits |
4 + % |
TMS0972NC |
9V batt, ext jack 2,5 mm (+ centre) |
- |
Sufficient, working |
 |
Texas Instruments TI-1250 |
76, assembled in USA |
LED 8 digits |
4 + % + mem |
one chip |
9V batt, ext 2,5mm jack (- centre) |
- |
Good, working |
 |
Texas Instruments TI-1265 |
nd, assembled in Italy |
Fluo 8 digits |
4 + % + mem |
one chip without label |
9V batt, ext 2,5mm jack (- centre) |
- |
Good, working |
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