concept keyboard

concept keyboard keys Have a specific dedicated function. An example would be in a restaurant where there is a key for each different food items that might be bought

scanner

Scanner is a device similar to a photocopier. Scanner creates and and electronic form of the printed image which can later be manipulated changed and modified according to the requirements. Scanners come in a variety of size from hand held models to desktop models as discussed below :

1.  handheld scanner are very small which can be held in a hand.
2. Flatbed scanner are large and more expensive scanners but they definitely period quality image. These  scanners have a flat surface on which the printed image to be a scanned in placed.
3.  Drum scanners are medium size of scanners with a rolling drum. The seed is fed through the scanner so that the drum rolls over the entire sheet to be scanned.

microphone

 we can send sound input to computer through a special input device called microphone or mic in short. A mic converts the sound received into computer format which is called digitized or Digital audio.

the mouse

 the mouse is pointing device that points to a position on computer screen. Mouse control movement of pointer honour screen. When a mouse moves on a flat surface the cursor on the screen also moves in the direction of the mouse movement. A mouse generally has two or three buttons and it may or may not have a wheel.

the keyboard

 keyboard is a typewriter keyboard is a typewriter like device which is used to type in the letters digits and commands. A keyboard content a matrix of switch. Each key when pressed send a digital code to the computer that determines which key has been placed.

name of input device

Keyboard mouse microphone scanner scanner concept keyboard touch screen barcode reader magnetic stripe reader etc

input device

 the input the input unit is responsible for accepting input that is data and instructions from the user. This work is accomplished with the help of input device. Device in general refers to an equipment