Special purpose computer for demonstrating peripheral devices su

Details Special purpose computer for demonstrating peripheral devices su Special purpose computer for demonstrating peripheral devices su

1994-05-02

1996-08-27

Black, Thomas G.

Boots, shoes, and leggings

364235, 3642357, 3642372, 3642256, 364221, 395309, 395775, 395101, G06F 300, G06F 1300

Patent

active

055509851

ABSTRACT:
A special purpose computer is used to demonstrate the operation of a computer peripheral such as a laser printer. The special purpose computer is connected to a data port of the computer peripheral. In the preferred configuration, the special purpose computer withdraws "leeched power" from data signal lines on the data port without requiring further connection to a power supply. The "leeched power" is used to charge a storage capacitor and operate an oscillator circuit. When power consumption by the storage capacitor and oscillator circuit has abated, the special purpose computer is able to respond to control inputs to address memory. This provides data outputs to the computer peripheral, thereby demonstrating its operation.

REFERENCES:
patent: 4426166 (1984-01-01), Bowling
patent: 4886602 (1989-11-01), Hall
patent: 5090830 (1992-02-01), Kroeger et al.
patent: 5179710 (1993-01-01), Coschieri
patent: 5313642 (1994-05-01), Seigel
patent: 5423004 (1995-06-01), Porter
patent: 5438678 (1995-08-01), Smith

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