Title:
INPUT EQUIPMENT
Document Type and Number:
Japanese Patent JPS5771037
Kind Code:
A
Abstract:
PURPOSE: To utilize the limited input ports of a control part effectively at low cost, by connecting a power source to the plural input ports through switches in the input equipment of a control circuit using a key matrix circuit.
CONSTITUTION: A power source Vcc is connected to input ports 11W14 through switches S1, S6, S11, and S16. By changing the control information of a control part 1, the number of switches for inputting the control information is increased or decreased at need without adding more input and output ports.
Inventors:
TAKEDA HIROAKI
TANAKA KIYOU
TANAKA KIYOU
Application Number:
JP14866280A
Publication Date:
May 01, 1982
Filing Date:
October 22, 1980
Export Citation:
Assignee:
CANON KK
International Classes:
G06F3/023; G03B27/52; H03M11/20; (IPC1-7): G06F3/02