Communications: electrical – Digital comparator systems
Patent
1975-07-28
1976-05-18
Zache, Raulfe B.
Communications: electrical
Digital comparator systems
G06F 700
Patent
active
039582230
ABSTRACT:
Disclosed is an expandable calculator system of the type implemented on semiconductor chips and featuring additional data storage registers for increasing data storage capacity of the basic system. A basic calculator system comprising two semiconductor chips is provided with additional semiconductor chips each providing a plurality of separately addressable registers for storing data, to thereby increase the data storage capacity of the two-chip system. Ten registers are desirably provided per external chip, and a novel method of addressing particular external register chips and particular registers therein is utilized. First and second signals synchronize the internal timing of the external register chips and also enable communication to the external chips. After the external register chip has been enabled, the appropriate memory is addressed via the same lines on which the data is subsequently transmitted to the memory.
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Connors, Jr. Edward J.
Levine Harold
Sachs Michael C.
Sadacca Stephen S.
Texas Instruments Incorporated
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