Microcomputer system operating in multiple modes

Details Microcomputer system operating in multiple modes Microcomputer system operating in multiple modes

1982-06-24

1985-01-29

Zache, Raulfe B.

Boots, shoes, and leggings

G06F 100

Patent

active

044970218

ABSTRACT:
A microcomputer system having a central processing unit (CPU) responsive to mode control signals for operating the system in respective operating modes, a power supply circuit for supplying a reset signal to the CPU, a memory, and a keyboard, is provided with a mode selecting circuit which includes a logical gate with inputs and with outputs coupled to the CPU for supplying the mode control signals, a selector switch device connected with the logical gate for selectively determining which of the mode control signals is supplied to the CPU, and a sensing means connected with the logical gate for causing one of the mode control signals to be applied to the CPU when the reset signal is supplied to the CPU and the keyboard is simultaneously actuated, irrespective of the condition of the selector switch device.

REFERENCES:
patent: 4080659 (1978-03-01), Francini

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