computers and parts therefor; software programs for computers and microprocessors in the fields of access control, copy control and time and attendance; electronic, electromechanical, mechanical and pneumatic data acquisition and control instruments and instruments to register, control, store, record, reproduce, allocate and display various types of data; namely, quantity, volume, pressure, temperature, elapsed time, length and distance, weight, strokes, revolutions, operations and other intelligence by means of mechanical counting, totalizing, display and printing apparatus, electromechanical counting, totalizing, display and printing apparatus, electronic counting, totalizing, display and printing apparatus, pneumatic counting, totalizing, display and printing apparatus, electrosensitive, thermal and dot matrix printers and parts thereof, electromechanical paper cutters, electronic and electromechanical ticket printers and event loggers, magnetic tape drive apparatus, battery operated counters, magnetically actuated counters, presettable and programmable counters, electronic clock generators, tachometers, proximity switches, rotary encoders, angle and path position indicators, light barriers for detecting the interruption of a light beam by an object, electronic pulse scalers, electronic pulse shapers, electronic pulse inhibitors, amplifiers and electronic summing devices, switches, relays, power supplies, covers, cases, mounting frames, levers, and measuring wheels, and parts therefor; electronic monitoring, recording and allocation apparatus; namely, copy controllers for copiers, computers for recording and processing working hours, production data and access; computer time keeping units, facsimile controllers, time controllers for measuring machine usage time, keypad controllers for copiers, monitor controllers for copiers, copier debit card controllers and keypad controllers for copiers, keypad controllers for computers, electronic key with counting capability for monitoring copies produced and receptacles to unlock a copier upon insertion of an electronic key, and parts therefor