Ways Computer System Communicate with I/O Devices.

There are four ways a computer system communicate with I/O devices. Direct control Programmed I/O Interrupt driven I/O Direct memory access Direct control : Old and obsolete technique. CPU interact directly with I/O devices with the help of dedicated program. Processing is extremely slow. Programmed I/O : CPU and I/O devices communicates through ‘Device Status … Read moreWays Computer System Communicate with I/O Devices.

The Computer System (Hardware View)

A computer is a digital machine that generates, processes, stores and transmits information. The essential design of a computer is bases on Von Neumann architecture consisting of two components – a processor and a tore connected through a communication channel. The program instructions and associated data are loaded into the store. Therefore, such a machine … Read moreThe Computer System (Hardware View)