Single-hand digital calculator

Details Single-hand digital calculator Single-hand digital calculator

1974-01-07

1976-02-10

Malzahn, David H.

Registers

Transfer mechanism

Traveling pawl

235145R, G06F 738

Patent

active

039379396

ABSTRACT:
An electronic digital calculator, the calculator being in the form of an elongated tubular body having a size and shape similar to a pen or pencil and having a plurality of input valve setting keys and function keys carried on its surface as well as illuminable "read-out", or display, screen. The value setting keys and the function keys are arranged on the surface of the tubular body such that the calculator can be used while held in one hand of the user.

REFERENCES:
patent: 3034717 (1962-05-01), Werner
patent: 3800129 (1974-03-01), Vmstattd

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