DIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY

Introduced: September 1968

Last revised: January 1985

Classification Context

Section:: PHYSICS
Class:: COMPUTING OR CALCULATING; COUNTING
Subclass:: DIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY

Description

G06C covers purely mechanical digital computing machines where all arithmetic and logical operations are performed through mechanical means—such as gears, cams, levers, and linkages—without electronic components. This classification encompasses mechanical calculators, difference engines, and analogous electromechanical devices designed before the advent of electronics-based computing. Inventions in this class focus on mechanical mechanisms for implementing addition, subtraction, multiplication, division, and data storage or display through physical movement and mechanical logic.

Scope Notes

Limiting references: Score computers for card games

Related Keywords

ARITHMOMETERSCARRIAGES in mechanical digital computersCOMPUTING by mechanical means only, in digital fashionDIFFERENTIAL in computing mechanismsPLANET used in digital computing mechanismsTENS-TRANSFER in mechanical digital computers

15 direct subcodes

Child Classifications

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G06C 1/00 Computing aids in which the computing members form at least part of the displayed result and are manipulated directly by hand, e.g. abacuses or pocket adding devices
G06C 11/00 Output mechanisms
G06C 13/00 Storage mechanisms
G06C 15/00 Computing mechanisms; Actuating devices therefor
G06C 17/00 Mechanisms for converting from one notational system to another, i.e. radix conversion
G06C 19/00 Decimal-point mechanisms; Analogous mechanisms for non-decimal notations
G06C 21/00 Programming-mechanisms for determining the steps to be performed by the computing machine, e.g. when a key or certain keys are depressed
G06C 23/00 Driving mechanisms for functional elements
G06C 25/00 Auxiliary functional arrangements, e.g. interlocks
G06C 27/00 Computing machines characterised by the structural interrelation of their functional units, e.g. invoicing machines
G06C 29/00 Combinations of computing machines with other machines, e.g. with typewriter, with money-changing apparatus
G06C 3/00 Arrangements for table look-up, e.g. menstruation table
G06C 5/00 Non-functional elements
G06C 7/00 Input mechanisms
G06C 9/00 Transfer mechanisms, e.g. for transmitting figures from the input mechanism into the computing mechanism