Size (approx): 80mm (max) x 145mm x 35mm (max)  (w,h,d)
Weight 108g excluding  batteries
Power: 9.0V DC, 1 x PP3 size battery.  
Display: 8 digit LED with bubble lens (plus one for minus sign)

Features: Square root, reciprocal, square, pi. The functions Sin, cos, tan, log, lnx and y-to-x are inverted by use of the INV key.  EE or INV EE switches between 8-digit calculator and scientific (5+2) and back.  Right arrow key briefly shows any scientific-format number as full eight digit.  Sign change, parentheses, constant, Degree/radian/grad mode and three full function memories make this a sophisticated calculator.

Date: 1978

This calculator is very similar to the TI-30, but it has three memories instead of one

Serial number 479382 3578RCI (week 35 1978)

Kindly donated by Francis Hookham 

Manufacturer: Texas Instruments
Date: 1978

This exhibit has a reference ID of CH31294. Please quote this reference ID in any communication with the Centre for Computing History.

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