Processor Technology Corporation

Processor Technology Corporation was a microcomputer company founded by Bob Marsh in April 1975.
The SOL-20 utilized the Intel 8080 8-bit microprocessor chip, running at 2 MHz. The SOL-20 consisted of a main motherboard (PCB) mounted at the bottom of the case, and a 5 slot S-100 bus card cage. The main PCB consisted of the CPU, memory, video display, I/O circuits. Inside the case included power supply, fan, and keyboard. The sides of case are solid oiled walnut wood, and blue painted steel. An external composite monitor screen was also needed