1-bit computing: Difference between revisions

Revision as of 17:40, 17 October 2022

Revision as of 22:19, 23 December 2022

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An example of a 1-bit architecture that was marketed as a CPU is the [[Motorola MC14500B]] Industrial Control Unit (ICU),<ref name="Motorola_1977_MC14500B"/><ref name="Motorola_1995_MC14500B"/> introduced in 1977 and manufactured at least up into the mid 1990s.<ref name="Motorola_1995_MC14500B"/> Its manual states:

{{quote|[…] Computers and microcomputers may also be used, but they tend to overcomplicate the task and often require highly trained personnel to develop and maintain the system. A simpler device, designed to operate on inputs and outputs one-at-a-time and configured to resemble a relay system, was introduced. These devices became known to the controls industry as [[Programmableprogrammable Logiclogic Controllercontroller]]s (PLC). The Motorola MC14500B Industrial Control Unit (ICU) is the monolithic embodiment of the PLC's central architecture […]

There are functions for which one bit machines are poorly suited. […] Under some circumstances, a combination of an [[Motorola 6800|MC6800]] MPU and an MC14500B ICU may be the best solution. […]