Horology: time measuring systems or devices – Combined with disparate device
Patent
1987-02-20
1989-09-05
Roskoski, Bernard
Horology: time measuring systems or devices
Combined with disparate device
368107, 368 8, 368 90, G04F 300
Patent
active
048645494
ABSTRACT:
A single chip programmable microcomputer timer for use in car washers, air dispensing machines, pay showers, suntan salons, vacuum equipment and the like. The timer unit is designed with a 4,000 bit microcomputer chip and contains a large scale integrated (LSI) circuit comprising a central processing unit (CPU), a read only memory (ROM) for program storage and a random access memory (RAM) for general data usage. The microcomputer functions to display a friendly message to the user of the timer and to display a diagnostic message on the timer's visual display when an error is recognized by the computer. The computer will flash the visual display at a predetermined time near the end of the cycle. Two programming buttons on the timer permit the coin inventory to be examined and/or cleared in conjuction with a nonvolatile memory designed in the computer. The computer also performs other functions all of which make the timer a very useful device for its many possible applications.
REFERENCES:
patent: 2735005 (1956-07-01), Steele
patent: 3279480 (1966-03-01), Jarvis
patent: 4176739 (1979-08-01), Corcoran, Jr.
patent: 4367051 (1983-02-01), Inoue
patent: 4541519 (1985-09-01), Belviso et al.
patent: 4640624 (1987-05-01), Pitt
Roskoski Bernard
Von Behren Norvell E.
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