TI-2550 Memory Calculator (1st Design)

Size (approx):
80mm (max) x 164mm x 45mm (max)  (w,h,d)
Weight 212g excluding batteries.
Power: 6.0V DC, 4 x AA size batteries or 3 x AA-size rechargeable batteries.
Battery compartment has rotary lock turned with a coin.  On/off switch on front at the far top right corner.
Display: 8 digit red LED display - ninth used for minus, error and memory signs.
Features: Basic four function with percentages and four function memory.  Switch for floating, two or four decimal points.
Date: 1974

Functions: Basic four, memory, percent
Number of Digits: 8
Display Type: LED
Logic Technology: LSI
IC Complement: Texas Instruments TMS 0601 NC (5 total)
Manufacturer: Made by Texas Instruments in Italy

Kindly dontaed by Francis Hookham

Manufacturer: Texas Instruments
Date: 1974

Other Systems Related To TI-2550 Memory Calculator (1st Design):

Item Manufacturer Date
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This exhibit has a reference ID of CH31295. Please quote this reference ID in any communication with the Centre for Computing History.

 

TI-2550 Memory Calculator (1st Design)


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