Portable semiconductor memory device

Details Portable semiconductor memory device Portable semiconductor memory device

1990-01-16

1991-06-18

Fears, Terrell W.

Static information storage and retrieval

Addressing

36518901, G11C 1140

Patent

active

050254200

ABSTRACT:
A portable semiconductor memory device includes an internal memory for storing data, an address bus, a control bus, and a data bus which are connected to the internal memory, a connector for electrically connecting the address bus, the control bus, and the data bus to terminal equipment, and a contact confirmation/control circuit which is connected to the address bus, the control bus, and the data bus and in which known data is previously stored and which outputs the known data to the data bus when a read control signal is input from the terminal equipment over the control bus and when a given address is specified on the address bus to indicate the proper connection of the memory device to the terminal equipment through the connector.

REFERENCES:
patent: 4889495 (1989-12-01), Kimura

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