Understanding Computer Hardware: Input, Output, and System Devices, Slides of Computer science

Download Understanding Computer Hardware: Input, Output, and System Devices and more Slides Computer science in PDF only on Docsity! Computer Hardware / What is Computer Hardware ? Q Computer Hardware is the physical components of the computer, Refers to the tanglible (things you can touch) components of a computer system. ® Monitor ® Keyboard ® Computer Data Storage ® Graphic card ®Sound card ® Speakers INPUT DEVICES Keyboard ® Is a standard input devices Mouse ® Is a hand clicked devices usedto for of most pointing and moving Computers.used to type data into the computer Joystick Scanner ° ; ; ® A scanner allows you to Is an input devices scan which is ; Document, Picture,or Commonly used for Graphics computer ames and view them on the g computer \ OUTPUT DEVICES Printers ® An Output Devices That Produces Text And Graphics On Paper . ® The central processing unit Carries out each instructon of the program in sequence , to Perform the basic arithmetical, L rstem ® It supplies power form the power Supply to the drive. The power cable are red,yellow and black. The yellow Wire furnishes 12V of power,the red Wire furnishes 5V of power, the two Black wire are ground wire for each. Memory * The memory in a computer system is of two fundamental types : The Main/Primary memory and the secondary memory. Primary Memory Secondary RAM Hard Disk (— > © Primary memory: is accessible directly by the processing unit. ®RAM (Rendom access memory) is an example of primary memory. ®As soon as the computer is switched off the contents of RAM is lost. ®|n Computer Memory both program and data are stored in the binary form. ®The binary system has only two value ‘O’and ‘1’ 1KB is 1024 bytes 1MB is 1024 KB 1 GB is 1024 MB 1TB is 1024 GB ® Secondary memory: such as floopy disk,hard magentic disk,etc. is located inside and outside the computer. ®ROM (Read only memory) is an example of secondary memory. \ yy