Interface circuit for connecting peripheral equipment to a compu

Details Interface circuit for connecting peripheral equipment to a compu Interface circuit for connecting peripheral equipment to a compu

1982-07-23

1987-07-14

Heckler, Thomas M.

Boots, shoes, and leggings

G06F 1312

Patent

active

046807322

ABSTRACT:
An electronic interface controller for coupling peripheral equipment, such as a keyboard, printer, or magnetic stripe reader, through a financial terminal to a financial computer system. The interface controller selects the peripheral equipment to be utilized, prescribes the operating mode, and establishes the timing and synchronization of the data transfer. Among its features the invention also includes a unique implementation of D-type flip-flops, with logic feedback, to create synchronous binary counters of selectable modulos.

REFERENCES:
patent: 4079448 (1978-03-01), N'Guyen et al.
patent: 4115852 (1978-09-01), Rozell
patent: 4124888 (1978-11-01), Washburn
patent: 4156796 (1979-05-01), O'Neal et al.
patent: 4408272 (1983-10-01), Walters
MC68120/MC608121, Intelligent Peripheral Controller User's Manual, 1981, pp. 1--1 through 1-12.

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