Programmable multifunction speedometer

A programmable multifunction speedometer, wherein a sensor responding to drive train motion provides input pulses related to speed of vehicle travel, the pulses being input to a programmable microprocessor that has been programmed at least to drive an instantaneous and continuously correct display of speed, the speedometer having multiple programming modes including a first mode for programming the microprocessor from the external source, a second mode for programming upon speedometer installation using mode switches, a third mode for programming during vehicle operation operated by a manual switch to start and stop a counted succession of the input pulses, a fourth mode of programming using multiposition selector switches, and a fifth mode for resetting a trip odometer of the speedometer during vehicle operation.

A programmable multifunction speedometer, wherein a sensor responding to drive train motion provides input pulses related to speed of vehicle travel, the pulses being input to a programmable microprocessor that has been programmed at least to drive an instantaneous and continuously correct display of speed, the microprocessor having a first input device for receiving programming from an external source, and a second input device for modifying programming during speedometer operation, the programming having a data record function for storing speed data and a data replay function programmable for selected time-sequence display of the stored speed data.

A programmable multifunction speedometer, wherein a sensor responding to drive train motion provides input pulses related to speed of vehicle travel, the pulses being input to a programmable microprocessor that has been programmed at least to drive an instantaneous and continuously correct display of speed, the microprocessor having a first input device for receiving programming from an external source, and a second input device for modifying programming during speedometer operation, the programming having a data record function for storing RPM data and a data replay function programmable for selected time-sequence display of the stored RPM data.