Transistor circuitry is presented that enables the construction of a digital computer which will operate at a clock frequency of 200 kc or less. The circuitry employs readily available germanium or silicon junction transistors of the type used in audio-frequency circuit work. A new system of diode gating is also presented as a necessary part of the circuit philosophy. No vacuum tubes are required or used within the computer.

The following investigation on flip-flop circuits was originally undertaken to determine if a reliable flip-flop circuit could be designed to operate from a low supply voltage using tubes that are presently available and in production. The reason for designing the circuit to operate from a low supply voltage is to reduce the required power consumption of such information storage devices to a minimum and to provide a low d-c level output. The low d-c level output voltages of the two stable states of the circuit and the low flip-flop power dissipation enables an entire computer to operate from one regulated power supply rather than the numerous regulated supplies required by most computers. The low power dissipation is also essential since the reliability of germanium diodes and other heat sensitive components is greatly increased as their operating temperature is decreased.