TERMINAL, DATA PROCESSOR, SWITCHING UNIT, INTERFACE, AND KEYBOARD THE LATTER THREE CONNECTED TO THE FORMER TWO

Title:

TERMINAL, DATA PROCESSOR, SWITCHING UNIT, INTERFACE, AND KEYBOARD THE LATTER THREE CONNECTED TO THE FORMER TWO

Document Type and Number:

WIPO Patent Application WO/1991/008533

Kind Code:

A1

Abstract:

A terminal comprising a terminal body (2) provided with a key-input circuit (21) and a CPU (22), and a switching unit (3) detachably connected to the terminal body (2) via connectors (4, 5). The number n of switching signal input terminals (41-4n) provided in the key-input circuit (21) is equal to or greater than the number N of switches (11-1N) provided in the switching unit (3) (n N). A generator (6) provided in the switching unit (3) generates a signal specifying the number N when the number N is set. The specifying signal is fed to the key-input circuit (21). The CPU (22) of the terminal body (2) receives switching signals only from the input terminals whose number is equal to the number N. Thereby, plural kinds of switching units having different numbers of switches can be used, connecting them to one terminal body.

Inventors:

TSUJI TOSHIYUKI (JP)
OZAKI TOKIO (JP)

Application Number:

PCT/JP1990/001542

Publication Date:

June 13, 1991

Filing Date:

November 28, 1990

Export Citation:

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Assignee:

OMRON TATEISI ELECTRONICS CO (JP)

International Classes:

G06F3/023; H03H11/20; H03M11/20; (IPC1-7): G06F3/02

Foreign References:

JPS60263222A	1985-12-26
JPS6339743U	1988-03-15
JPS62117636U	1987-07-25
JPS5875239A	1983-05-06
JPS62222321A	1987-09-30
JPS58191032A	1983-11-08

Other References: