The Sharp EL-811, Prinztronic MC85, and Prinztronic MC95 are all similar, early hand-held calculators made by Sharp, though they have some significant differences.

Sharp ELSI EL-811 (aka EL-811A)

One of the first hand-held, battery powered calculators with memory function.

Technical details:

7.2 v (6x AA) rechargeable battery.
Display is 8 digits, green fluorescent tubes - the example in the photograph above has normally shaped digits whereas the example below has the more stylish digits of the Prinztronic MC85further down the page.
Multiplications and divisions are performed to 16 digits - the lower 8 digits are shown by pressing the key.
4 functions, memory.

Dimensions: 115 mm x 172 mm x 43 mm (4.5" x 6.75" x 1.7").

Made in Japan 1972.

Further details at http://www.vintagecalculators.com/html/sharp_el-811___derivatives.html

Our EL-811A is in excellent working condition and is complete with soft cases and AC adaptor. It was very kindly donated by Sharard and Sheila Wilson

Manufacturer: Sharp
Date: 1972

This exhibit has a reference ID of CH26470. Please quote this reference ID in any communication with the Centre for Computing History.

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