![]() This is mainly used in notebook or laptop computer, instead of a mouse. Therefore, they are used in conjunction with a keyboard. The movement of the mouse along the x-axis helps in the horizontal movement of the cursor and the movement along the y-axis helps in the vertical movement of the cursor on the screen. There are two or three depression switches on the top. Buttons and switches are used to enter predefined function values.Ī Mouse is a pointing device and used to position the pointer on the screen. Dials are used to enter scalar Dials also enter real numbers. Special purpose keyboards are available having buttons, dials, and switches.Keyboards are available with special features line screen co-ordinates entry, Menu selection or graphics functions,.Alphanumeric Keyboards are used in (Computer Aided Drafting).Numeric Keyboard: It is on the right-hand side of the keyboard and used for fast entry of numeric.Alphabetic keys: a to z (lower case), A to Z (upper case).The keyboard has alphabetic as well as numeric keys. A keyboard with 101 keys is called a QWERTY keyboard. The data is entered by pressing the set of keys. ![]() The most commonly used input device is a keyboard. Output can be text, numeric data, line, polygon, and other objects. ![]() ![]() Output device display data from the memory of the computer. The data can be in the form of text, graphics, sound, and text. The Input Devices are the hardware that is used to transfer transfers input to the computer. ![]()
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