Powerless remote program reservoir

Boots – shoes – and leggings

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307296R, 364707, 365226, G06F 1300

Patent

active

045717028

ABSTRACT:
An apparatus for making available to a calculator remote programs provided on memory chips and transferring the data stored in the chips into the calculator using only the power supply of the calculator. A connector extends between the calculator and the apparatus for supplying a chain of clock pulses from the calculator for controlling the transfer of data between the apparatus and the calculator. The EPROM chips are temporarily turned on with power generated by the power supply carried in the calculator transferring the data stored in the chip to a temporary storage device. Data is transferred from the temporary storage device to the calculator at a slower rate than the rate that the data is transferred into the temporary storage device from the chip. Power is cut off to the chip immediately after the data is transferred from the chip to the temporary storage device minimizing the power requirement for transferring data from the chip to the calculator. A pair of semi-conductive devices and a capacitor are used for temporarily turning on the chip with the power.

REFERENCES:
patent: 4139893 (1979-02-01), Poland
patent: 4151611 (1979-04-01), Sugawara et al.
patent: 4171539 (1979-10-01), Tawfik et al.
patent: 4317180 (1982-02-01), Lies
patent: 4381552 (1983-04-01), Nocilini et al.
patent: 4398248 (1983-08-01), Hsia et al.
patent: 4445205 (1984-04-01), Ebel
"Power Switch ROMs and PROMs Quickly", Electronic Design 9, vol. 25, pp. 102-104, Apr. 26, 1977.

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