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“I came across this weird chip a few months ago. Designed by Motorola in the 70s, its purpose is to replace the “ladder logic” relays in industrial process control so all it needs to do is make simple decisions based …
Content for MC14500B
The MC14500B Industrial Control Unit (ICU) is a single–bit CMOS processor. The ICU is designed for use in systems requiring decisions based on successive single–bit information. An external ROM stores the control program. With a program counter (and output latches and input multiplexers, if required) the ICU in a system forms a stored–program controller that replaces combinatorial logic. Applications include relay logic processing, serial data manipulation and control. The ICU also may control an MPU or be controlled by an MPU.