Preset counter apparatus for copying machines and the like

Details Preset counter apparatus for copying machines and the like Preset counter apparatus for copying machines and the like

1989-02-24

1990-11-20

Heyman, John S.

Electrical pulse counters, pulse dividers, or shift registers: c

Systems

With programmable counter

377 55, 355308, 36470916, 36470915, G06F 302, H03K 2102

Patent

active

049724479

ABSTRACT:
A preset counter apparatus for copying machines and the like having respective keys corresponding to digit positions of units and tens and a display for displaying numerical value in the digit positions of units and tens. The preset counter apparatus is so controlled that a value "0" is automatically displayed in the units digit position when the key corresponding to the tens digit is initially activated and that a value previously set in the units digit position is maintained as it is regardless of the posterior activation of the key corresponding to the tens digit.

REFERENCES:
patent: 4105914 (1978-08-01), Murata et al.
patent: 4188529 (1980-02-01), Schochat et al.
patent: 4265395 (1981-05-01), Sumikawa et al.
patent: 4491827 (1985-01-01), Sugiura et al.
patent: 4646330 (1987-02-01), Sugiura et al.

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