Abstract: The computer assisted time study system is used for establishing standard time values for workers at a company and comprises a hand holding data accumulating device including a hand holdable housing, electronic circuitry including a microcomputer in the hand holdable housing and including an on-board memory and a clipboard mounted on top of the housing and having clip for releasable securing a time study sheet of form on the clipboard. Data acquisition software and initial processing software are stored in the on-board memory of the microcomputer.

Abstract: The hand held decimal timer circuit comprises: a power supply having a positive voltage output and a ground or common output; a counter circuit coupled to the power supply; a frequency divider circuit coupled to the counter circuit and to the power supply; a clock circuit including an oscillator coupled to the frequency divider circuit; a display circuit coupled to the counter circuit; a switch circuit coupled to the counter circuit; and, the frequency divider circuit including: (a) a first input for receiving a clock signal from the clock circuit, (b) a second input and a third input for receiving, respectively, a positive voltage reference and a ground voltage reference from the power supply, (c) a 12 bit binary counter which counts the clock cycles from the clock circuit and outputs, on a plurality of output pins, a number of clock cycles in binary form, (d) a pair of NAND gates each having at least three inputs and an output, the inputs being coupled to at least some of the plurality of output pins for re