1. Functions of input and output devices
Types of input and output devices
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2. Objective
On completion of this period, you would be able
to know
Functions of input devices
Functions of output devices
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3. Recap
What is a memory?
Memory is a space to store computer’s data.
Types of memory
1. Primary Memory
2. Secondary Memory
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4. Prerequisite
What are input and output devices?
Computer accepts data through an input
device
Results are showed or displayed on the
output device.
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5. INPUT DEVICES
 Keyboard
 Mouse
 Light pen
 Magnetic tape
 Hard and Floppy disk
 Scanner
 CD-ROM
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6. Keyboard
 It is an input device.
 It is used to enter data into a computer.
 It is similar to a type writer.
 It contains number of keys.
 Most keyboards have 101/104 keys.
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7. Mouse
 It is an input device.
 It is a pointing device.
 Used to select and move items on your
screen.
 Click to select an icon, and double click to
open it.
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8. Input devices
keyboard
mouse
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9. Scanner
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10. Scanner
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