Facebook https://www.facebook.com/academykhi/ <br />Twitter https://twitter.com/academy_khi <br />Google+ https://plus.google.com/u/0/102485105645159796079 <br />Website http://academy-khi.com/ <br /> <br />What is the computer? What is input device? What is Output device? What is System unit? What is CPU? What is Microprocessor? <br /> <br />Computer Introduction <br />A computer is not made for internet browsing or for watching movies. A Computer is an electronic machine that is used to manipulate data. <br /> <br />A device which accepts input data, do some mathematical operations and produce the output. a calculator is a kind of computer. Mobile is a computer. Desktop, laptop, ATM machine and etc. <br /> <br /> <br />Computer Parts <br />Input Devices <br /> <br />It takes input from the outside world or user. mouse, mic, keyboard, scanner are the examples. <br /> <br />Output devices <br /> <br />Which gives the result to the user or outside world. Monitor, printer, plotter, speaker are the examples. <br /> <br />System Unit <br /> <br />System unit SU is the most important part of the computer. SU can run without any input and output device. It contains all necessary components to run a computer like, <br /> <br />Power supply. <br />CPU central processing unit. <br />RAM Random access memory. <br />Hard disk. <br />CD-ROM. <br />Motherboard. <br />etc. <br />Computer Language <br />A Computer understands only binary language. It has only two values 0 or 1. <br /> <br />Operating System <br />Operating system OS is a software to run a computer. It is just like a driver. It controls the hardware function. There are multiple types of operating systems designed by different companies. <br /> <br />Windows. <br />Unix. <br />Linux. <br />Mac. <br />Android. <br />etc. <br />Application Software <br />It is also a software. It is made to perform any specific task. <br /> <br />Adobe PhotoShop used for photo editing. <br />VLC player used to run movie. <br />Microsoft Office used for office related tasks. <br />etc.
