Brief on
Input and output unit of a computer.
An i/o unit is a component of computer .The i/o unit is composed of two
parts input unit and out unit .The input is responsible for providing input to
the computer and the output unit receive output from the computer.
INPUT UNIT
· The input unit gets the data programs from various input
devices and make them available for processing to other units of the computer.
· The input data is provided through input devices such as KEYBOARD,MOUSE,TRACKBALL AND
JOYSTICK . The input data can also be provided by scanning images , voice
recording ,video recording etc.
3.Irrspective of the kind of input data provided to a
computer .All the input devices must translate the input into a form that is
understandable by the computer .i,e.. in machine readable form is done by the
input interface of input device.
In brief , the input
unit accepts input data from the user via input devices ,transforms the input data
in computer acceptable form using input interface for the input device and
provides the transformed input data processing ……
INPUT
DECVICES:
Keyboard, mouse, digitizing
tablet ,track ball ,joystick, touch screen, Light pen ,Speech Recognition
system, Digital camera, scanner, magnetic ink character recognition (MICR),
Optical character recognition, Optical Mark Recognition, Barcode reader.
OUTPUT UNIT
·
The output unit
gets the processed data from the computer and sends is to output devices to make
them available to the user of computer.
·
The output data
is provided through output devices like display screen , printer, plotter and
speaker .
·
The processed
data sent to the output device is in machine understandable form . This processed
data is converted to human readable form by the output interface of output
device .In brief ,the output unit accepts output data from computer via output
devices ,transform the output formation to human readable form using the output
interface of output device and provides the transformed output to user .
In addition to input
devices and output devices ,some devices function as both input and output
devices . The I/O devices provide the input to computer as well as get output
I/O devices are used by both the input unit and the output unit. Hard disk
drive ,floppy disk drive , optical disk drives are examples of I/O devices.
OUTPUT
DEVICES:
Monitor, visual
display, terminal: Printer, plotter, common output on microfilm(COM) , video
output system(VOS), Audio response system.
Labels: computer help, input and output device