Boots – shoes – and leggings
Patent
1977-04-01
1979-05-08
Smith, Jerry
Boots, shoes, and leggings
364200, 364900, G06F 308, G06F 1502
Patent
active
041539370
ABSTRACT:
A microprocessor system with high order capabilities is provided with the two non-volatile memories which are read-only-memories (ROMs) in the disclosed embodiment. A first ROM stores the microcode for controlling the operation of the microprocessor circuits. The second ROM, which is preferably disposed in a module or cartridge, stores a plurality of program codes which are used to address the first ROM. The second ROM's module may be inserted into a receptacle for interconnecting it with the remainder of the microprocessor system. Preferably, a plurality of such second ROMs are available for selectively plugging into the microprocessor system.
Further, a particular embodiment of the microprocessor system with high order capabilities for use as an electronic calculator with high order capabilities is disclosed in great detail.
REFERENCES:
patent: 3593313 (1971-07-01), Tomaszewski et al.
patent: 3760171 (1973-09-01), Wang et al.
patent: 3859636 (1975-01-01), Cook
patent: 3942156 (1976-03-01), Mock et al.
patent: 3953833 (1976-04-01), Shapiro
patent: 3971925 (1976-07-01), Wenninger et al.
"National's Scientific Calculator HAS Long-Term All-Semiconductor Memory", Electronics, Jun. 10, 1976, pp. 29-30.
Comfort James T.
Sadacca Stephen S.
Smith Jerry
Texas Instruments Incorporated
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