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What is mouse and types
Computer Mouse A computer mouse is a handheld hardware input device that controls a cursor in a GUI and can move and select text , icons , files , and folders . For desktop computers, the mouse is placed on a flat surface such as a mouse pad or a desk and is placed in front of your computer. The picture to the right is an example of a desktop computer mouse with two buttons and a wheel. Who invented the mouse? The mouse was originally known as the X-Y Position Indicator for a Display System and was invented by Douglas Engelbart in 1963 while working at Xerox PARC . However, due to Alto's lack of success, the first widely used application of the mouse was with the Apple Lisa computer . Today, this pointing device is on virtually every computer. What are the functions of a mouse? Below is a list of each of th...
Hard disk
Hard disk drive A hard disk drive ( HDD ), hard disk , hard drive or fixed disk [b] is a data storage device that uses magnetic storage to store and retrieve digital information using one or more rigid rapidly rotating disks ( platters ) coated with magnetic material. The platters are paired with magnetic heads , usually arranged on a moving actuator arm, which read and write data to the platter surfaces. [2] Data is accessed in a random-access manner, meaning that individual blocks of data can be stored or retrieved in any order and not only sequentially . HDDs are a type of non-volatile storage , retaining stored data even when powered off. [3] [4] [5] Hard disk drive Hard disk drive A hard disk is part of a DEFINITION hard disk , oft...
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