Texas Instruments scientific

 

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Texas Instruments SR-50 74, Usa (Dallas Tx) LED 10+2+2 digits scientific TMC0521NL, TMC0501NL, 2x SN27882, 12 trans BP-1 (3x AA ni-cd), ext 2,5mm jack chrg 8V AC First Texas scientific calculator Sufficient, working
Texas Instruments SR-50A 75, made in Italy LED 10+2+2 digits scientific TMC0521NL, TMC0501NL, 2x SN27882, TP4011AN, 57227, 3 trans BP-1 (3x AA ni-cd), ext 2,5mm jack chrg 8V AC - Good, working
Texas Instruments, SR-51A 75, USA LED 10+2+2 digits scientific TMC0501, TMC0522, TMC0523, 2x ICnd + 3 trans BP-1a (3x AA ni-cd batt pack) Weight, lenght conversions Good, working
Texas Instruments SR-51-II 77/78, assembled in Italy LED10+2+2 digits scientific TMC0501, TMC0581, 2x ICnd + 3 trans BP-6 (2x AA ni-cd), ext 2 pin charger 3,3V AC - Very good, working
Texas Instruments TI-51-III 79, assembled in Italy LED 10+2+2 digits programmable scientific, 32 program steps TMC1503NL BP-7 (2x AA ni-cd with 9V converter), ext 2 pin 5,7V AC - Sufficient, working
Texas Instruments SR-56 76, Italy LED 10+2+2 digits programmable scientific, 100 program steps TMC0501, TMS0537, TMC0538, TMC0599 BP-1a (3x AA ni-cd batt pack), ext jack 2,5mm Early programmable (as the SR-52 without magnetic I/O))  Sufficient, working
Texas Instruments TI-57 77, assembled in Italy LED 10+2+2 digits with lens programmable scientific, 50 program steps nd BP-6 (2x AA ni-cd), ext 2 pin charger AC - Good, working
Texas Instruments TI-58c 80, assembled in Holland LED 10+2+2 digits with lens programmable scientific, 480 program steps, constant memory TMC0501NL, TMC0591, 2x TMC0580, TMC0573NL, NECK9y029-944, 2x SN27882N BP-1 (3x AA ni-cd), ext 2 pin for AC charger Constant memory version of the TI-58/59 calculator series Good, working
Texas Instruments TI-59 83, assembled in USA LED 10+2+2 digits with lens programmable scientific, 960 program steps, card reader/writer TMC0501NL, TMC0591, 2x TMC0580, TMC0573NL, 2x SN27882N, LM324... BP-1 (3x AA ni-cd), ext 2 pin for AC charger The most famous programmable calculator every made As new, working
Texas Instruments TI-30 77, made in Italy LED 8 + 1 digits scientific single chip 9V batt The most famous basic scientific calculator built by Texas Good, working
Texas Instruments TI-33 79, made in Italy LED 8 + 1 digits scientific single chip 9V batt - Good, working
Texas Instruments TI-45 79, made in Italy Fluo 8 + 1 digits scientific TMC1983NC 9V batt Rare model without LED display Good, working

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