This document discusses input and output devices for computers. It describes keyboards, mice, and scanners as common input devices used to enter data into a computer. Inkjet printers, laser printers, and speakers are listed as examples of output devices that deliver processed data from the computer to users or other machines. The document also provides brief explanations of the uses of these input and output devices.

1. COMPUTER P.P.T

2. CONTENTS
INTRODUCTION
TYPES OF INPUT DEVICES
TYPES OF OUTPUT DEVICES
USES OF INPUT DEVICES
USES OF OUTPUT DEVICES

3. INTRODUCTION
VARIOUS DEVICES USED TO ENTER INFORMATIONS
AND INSTRUCTIONS INTO A COMPUTER FOR
STORAGE OR PROCESSING AND DELIVER THE
PROCESSED DATA TO A HUMAN OPERATOR OR , IN
SOME CASES A MACHINE CONTROLLED BY THE
COMPUTER .

4. TYPES OF INPUT DEVICES
KEYBOARD
MOUSE
SCANNER

5. TYPES OF OUTPUT DEVICES
INKJET PRINTER
LASER PRINTER
SPEAKER

6. USES OF INPUT DEVICES
 KEYBOARD - IT IS AN INPUT DEVICE BY WHICH WE CAN
EASILY TRANSFER DATA INTO THE COMPUTER .
 MOUSE – IT IS A HAND-HELD INPUT DEVICE . A MOUSE
CONSISTS OF TWO OR THREE BUTTONS
 SCANNER – SCANNER CREATES AN ELECTRONIC COPY OF
A PHOTOGRAPH . PROCESS OF CREATING A PICTURE –
FILE FROM A PHOTOGRAPH IS CALLED AS SCANNING .

7. USES OF OUTPUT DEVICES
 INKJET PRINTER- PRINTER IS USED FOR DRAWING
PRINTOUTS . PRICE OF INKJET PRINTERS IS MODERATE
BUT OPERATING COST IS HIGH ; AND THE QUALITY OF
PICTURES IS GOOD .
 LASER PRINTER- IT IS ALSO USED FOR DRAWING
PRINTOUTS . THIS PRINTERS COME WITH VERY
IMPRESSIVE PRICE TAG , BUT OPERATING COST IS LEAST
.
 SPEAKER- IT IS AN COMPUTER PERIPHERAL WHICH GIVES
AUDIO OUTPUT .