Analyzing apparatus with microcomputer

Details Analyzing apparatus with microcomputer Analyzing apparatus with microcomputer

1978-10-02

1980-12-09

Wise, Edward J.

Boots, shoes, and leggings

364500, 360 744, G06F 100, G06F 700

Patent

active

042388350

ABSTRACT:
An analyzing apparatus is controlled by a microcomputer which reads out programmed information from a magnetic card. The magnetic card does not always travel at a constant speed, and therefore, it is difficult for the microcomputer to entirely resort to the software for carrying out the signal processing required for the control of the analyzing apparatus. In order to obviate this difficulty, a hard logic circuit is provided to read out inverted bit information from the magnetic card, and the information thus read out is supplied to the microcomputer so that the microcomputer can reliably carry out the processing steps including bit counting and data reception. The hard logic circuit includes a flip-flop storing an FM signal recorded on the magnetic card and an exclusive-OR gate comparing the flip-flop output with the FM signal. A simple logic circuit is also provided for writing the FM signal on the magnetic card.

REFERENCES:
patent: 3492654 (1970-01-01), Fresch et al.
patent: 3705396 (1972-12-01), Nagaki et al.
patent: 4000518 (1976-12-01), Stearns
patent: 4024505 (1977-05-01), Sperling
patent: 4069511 (1978-01-01), Lelke

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