Comp.System 9 EC

Input Text Commands Images Sounds Processing Devices CPU RAM ROM Output Devices Computer Screen Printer Storage Devices Flash Drives Optical Media (CDs DVDs) Computer System It includes several devices that perform the four basic functions of computing. ROM Chips that contain the instructions that start the computer when you turn it on (read-only memory). CD-ROM & DVD Secondary storage devices that etches tiny pits onto a disc. CPU (Central Processing Unit) The main processing device in a computer that receives data from input devices and changes it into a form that can be used. Keyboard & Mouse The input devices for text and commands. RAM Temporarily stores instructions and data it is using on chips called random access memory. Command Instructs the computer to perform some action. Printer An output device for text and images.