Printer having single connector for parallel and serial interfac

Details Printer having single connector for parallel and serial interfac Printer having single connector for parallel and serial interfac

1990-04-06

1992-02-25

Wiecking, David A.

Typewriting machines

Miscellaneous

400 76, 395325, G06F 312

Patent

active

050908308

ABSTRACT:
A selection of signals, each to one of a limted number of contacts, achieves both parallel and serial interfaces using a single connector. The connector has individual contacts for the following signals for parallel communications: strobe, data signals, acknowledge, busy, printer out of paper, printer selected, paper feed one line after printing, logic ground, chassis ground, initialize the printer controller, and printer error; and has individual contacts for the following signals for serial communications: transmit data, request to send, logic ground, receive data, data terminal ready, data set ready, and clear to send.

REFERENCES:
patent: 4426166 (1984-01-01), Bowling
patent: 4538933 (1985-09-01), Imaizumi et al.
patent: 4595804 (1986-06-01), MacConnell
patent: 4763135 (1988-08-01), Shimode et al.
VT 100 User Guide Jun. 1981 pp. 24-25.
EIA Standard RS-232-C, Aug. 1969, pp. 8, 28 and Section 5 Through Figure 5.2.
Manual for Texas Instruments Model 855 Printer pp. 3-4 to 3-7.
Manual for Diablo Models 630 API/API ECS Communications Terminals, title page and p. 36.

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