Electronic multibase calculator

Details Electronic multibase calculator Electronic multibase calculator

1976-05-10

1978-10-24

Sloyan, Thomas J.

Registers

Systems controlled by data bearing records

Time analysis

340347DD, 364700, H03K 1324

Patent

active

041217608

ABSTRACT:
A selectively alterable base numerical system in which a calculator implemented in a few semiconductor chips has a keyboard to enter numeric data and to command functions to be performed on the data by circuitry on the semiconductor chips in a first number base. The results of operations on the data in accordance with a selected function are then available as by way of a display. Circuitry is provided responsive to a keyboard base function input to change the results between number bases, preferably between hexadecimal, octal and decimal. A three chip calculator is provided where a data chip cooperates with two ROM chips and a manual keyboard input unit to permit operation selectively in any of several number bases and to change between bases at any point in a course of operations.

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patent: 3934229 (1976-01-01), Cochran et al.
The Engineering Staff of Analog Devices, Inc., Analog-Digital Conversion Handbook 6/72, pp. III-50, 51.

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