An interface circuit for interfacing a relegendable liquid crystal display (LCD) keyswitch to a controlling processor. The interface circuit is adaptable for use with data input devices and point-of-sale devices.

A Z-axis flywheel control of a computer input device, adapted to operate in a complex computer environment for handling computer file and application software selection and processing, includes a flywheel rotatably disposed inside the computer input device, a grating for detection the angular displacement of the flywheel representing the Z-axis movement and a position returning device for maintaining and returning the flywheel back to a default or home position.

A vehicle carbon monoxide detection system 10 including internal 20 and external 40 carbon monoxide sensors operatively associated with the vehicle cab 150 and connected to a computer 60 that will selectively activate one of the sensors 20, 40 in response to the output of the vehicle speedometer 100. When the selected sensor 20, 40 detects excess carbon monoxide fumes relative to the vehicle cab 150, the computer will deactivate the vehicle ignition switch 110 stopping the vehicle motor 120 whic...

A antitheft apparatus for hindering theft by an intruder when the intruder is detected in an alarm mode without operator. In a smoke generation system which is coupled with an alarm system including an intruder detector for detecting an intrusion of an intruder into an monitored area and a mode setter for setting or resetting an alarm state in the monitored area, and which includes a smoke generator for generating smoke inside the monitored area, a antitheft system include smoke generation opera...

A DC powered water/moisture monitor suitable for use in combination with a Christmas tree stand to detect a low water/moisture level is provided. The alarm device set forth has application in many other fields including farmland moisture monitoring, house plant, soil moisture monitoring, water tank level monitoring inter alia. The device includes an alarm, a casing, electronic circuitry and sensors/probes/electrodes for detecting moisture/water. The unit is an integral unit and combines all of t...

A method and device for monitoring the production of a high voltage for use in electrostatic application of a coating product, the high voltage being produced by a generator and the monitoring being performed by a circuit for measuring an electrical parameter associated with the high voltage, together with verifying operation of the circuit immediately following start-ups of the generator.

A rear and side object detection system for a vehicle based on monolithic millimeter wave integrated circuit technology. A multiple antenna configuration is employed that defines six sensing regions to the right, left and the rear of the vehicle. A first sensing region is defined at the right side of the vehicle, a second sensing region is defined at the right side and rear of the vehicle and overlaps the first sensing region, a third sensing region and a fourth sensing region extend from the re...

A system for testing the electrical integrity of an illuminated exit sign alternately powered by a battery, rechargeable from a source of alternating current power. The system includes an alarm for indicating an electrical failure, precluding the illumination of the exit sign. A circuit tests the presence of battery electrical power for illuminating the exit sign. In addition, the circuitry periodically tests for the provision of adequate battery power to achieve the same function. Moreover, the...

A cooling device is disclosed for a computer having a drive bay region with at least one drive bay adapted to receive a drive. The device comprises a case configured to mount within the drive bay of the computer having at least a first and at least a second opening. When mounted within the drive bay, the first opening is exposed to ambient air about the computer and the second opening is disposed within the drive bay region of the computer. The device also comprises at least one air movement dev...

A brake and turn signal circuit permits a brake lamp to be used as a turn signal when both the brakes and turn signal are applied.