Boots – shoes – and leggings
Patent
1991-03-07
1994-01-04
Anderson, Lawrence E.
Boots, shoes, and leggings
3642457, 364260, 3642628, 364DIG1, 36496581, G06F 1300
Patent
active
052768392
ABSTRACT:
An EEPROM programming circuit is disclosed which provides for the on-board rogramming of a EEPROM memory using:
a microprocessor, a bootstrap ROM, a UART communications port, and a Eccles-Jordan flip flop switch system. These elements are electrically connected to a host system and the EEPROM by a central data bus. In normal operation, the host system sends a first set of data signals through the circuit to the EEPROM, which produces a set of processed signals. In operation in the programming mode the host system sends a second set of data signals to cause the microprocessor to send a switch signal to the Eccles-Jordan flip flop switch and to the bootstrap ROM. The bootstrap ROM contains the program code that forms the programs that are used to program the EEPROM. The Eccles-Jordan flip flop switch works with the communications port to serve as a means of isolating the EEPROM from the host system and directly connecting to EEPROM is the bootstrap ROM for programming when receiving the switch signal from the microprocessor.
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Robb James R.
Silver David S.
An Meng-Ai T.
Anderson Lawrence E.
Auton William G.
Singer Donald J.
United States of America as represented by the Secretary of the
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