Reducing input signal levels to a microprocessor

Details Reducing input signal levels to a microprocessor Reducing input signal levels to a microprocessor

1997-01-29

1999-09-21

Gordon, Paul P.

Boots, shoes, and leggings

307 101, G05B 1101, B60L 100

Patent

active

059562471

ABSTRACT:
A plurality of switches are connected to a lesser plurality of shift registers which are controlled by the microcontroller to provide serial binary signals over a single data line with a voltage level clamp by a zener diode in response to clock pulses. A second plurality of switches and rheostats are supplied to a lessor plurality of multiplexers. One of the input channels to each of the multiplexers is selected in response to a channel select signal provided by the microcontroller. The registers and multiplexers produce output signals that are clamped to a lower microcontroller operating level. Signals from the microcontroller are skipped as to control the registers and multiplexers. The operation of the switches and rheostats is used by the microcontroller to control the power devices such as lights, windows, turn signals and air conditioning.

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