Inside the Keyboard - How Computer Keyboards Work A keyboard is a lot like a miniature computer. It has its own processor and circuitry that carries information to and from that processor. A large part of this circuitry makes up the key matrix. The key matrix is a grid of circuits underneath the keys. Circuit Diagram Of Computer Keyboard | Diagram Circuit Diagram Of Computer Keyboard. Posted on March 30, 2019 by admin. Amstrad pcw home page rh caliban org 1985 computer 8256 other pinout schemes for the cx5m computers and monitors with schematic diagram for supervisory control data acquisition keyboard scan display and cpu on 8085 microprocessor block diagramblock diagram of 9. How to make a keyboard – the matrix | komar's techblog But there's one very popular solution among computer keyboards (maybe more in the old times, actually). Geekhack My favourite keyboard forum; Circuit Diagram Schematics is the language of electronics. It provides a concise and comprehensive diagrammatic description of a circuit.