1. INPUT AND OUTPUT
Safe Year10B

2. INPUT….
What is input?
An input device is a hardware that put the data into the computer.
The two type of input is:
 Manual input devices
 Automatic input devices

3. MANUAL INPUT DEVICES
For example:
 Keyboard
 Mouse
 Touch pad
 Joystick
 Touch screen
 Scanner

4.  Keyboard is the most common input device.
KEYBOARD Advantage:
 The keyboard come with the computer when you buy it.
 Use to type easily
Disadvantage:
 It is easy to type the letter wrong
 This also the most common input device. MOUSE
 This is use to select each program which is like our finger.
 The mouse have two button and one wheel which let you to
scroll down the page.
Advantage:
• Good for a desktop computer
Disadvantage:
• It need a flat space to make it work.

5. TOUCHPAD
 The touch usually been use on the laptop which is similar to
the mouse but it was a touch.
 It were use by dragging your finger around to select and
move around on the screen.
JOYSTICK
 The joy stick is use to for playing a game such as airplane
game.
Advantage:
 It give better gaming experience.
Disadvantage
 It might be difficult for using as a mouse.

6. TOUCH SCREEN
 This is the only device that both input and output are the
same one.
 This device is a easy device to use and most devices this
day use touch screen.
Advantage: Disadvantage:
 Easy to use. Expensive.
SCANNER
 Flatbed and handheld is the two type of scanner
 This device is use to scan any work sheet into the
computer.
 This device also been use to scan a barcode.
• Advantage- all the image that been scan will be put in the
document
• Disadvantage- image take a lot of memory.

7. AUTOMATIC INPUT DEVICES
Example:
 M.I.C.R
 O.M.R
 O.C.R
 Barcode readers
 Magnetic stripe readers
 Biometric devices
 sensors

8. M.I.C.R  Magnetic Ink Character Recognition (m.i.c.r)
 This is use to produce a cheque which can produce 300 cheque
a minute.
 This only recognize the number with a standard front.
At the bottom of each cheque there are:
 the cheque number
 the bank or building society sort code
 the customer's account number
O.M.R
 Optical Mark Reader (OMR)
 This device is use too make a multiple choice paper
 The paper that be print out need to use the pencil to fill in
Advantage:
 It can input the large amount of data
Disadvantage;
 If the pencil that fill in the answer is not dark enough it not going
to work

9.  Optical Character Recognition (OCR) is a normal
O.C.R scanner. It is use to scan the document on the piece of
paper into the computer as it shown on the diagram.
 Have a ability to scan the document accurately
 It is cheaper than the manual scanner
BARCODE READER
 Most of the thing that sale in the market have a barcode so
the barcode reader is need to use
The barcode give the information such as:
 The country of manufacture
 The name of the manufacture
 Produce code
 A barcode reader is an automatic input device which is used
to scan the barcode by using a visible red light.

10. MAGNETIC STRIP READER
 Magnetic strip is found the credit card which hold the personal information in it.
 The magnetic strip reader is use to read the magnetic strip to get the information.
BIOMETRIC DEVICES
 The biometric device is use to identify the person who put their finger on it.
 This device will get the biometric data into the main computer to indentify very
quickly.
 It use finger print
SENSOR
 The sensor will collect the data automatically.
 It can store either immediately to the computer or store for the
period of time.

11. OUTPUT DEVICES
 Output is a devices that show the output of the input.
Example:
 Monitor
 Speaker
 Printer
 Laser printer
 Ink jet printer
 Dot-Matrix printer
 Plotter
 Light

12. MONITOR
 A monitor or screen is the most common output devices.
 The picture on the monitor use about 1000 pixel which mean the more pixel the
more quality it is shown.
There are two type of monitor which is:
 cathode ray tube which is the old version monitor but it produce the heat easily.
 Thin film transistor- TFT is an expensive monitor that is newer than the cathode ray
tube.
SPEAKER
 Most computer will have the small speaker in it which you will
be able to hear thing such as a video.
Advantage:
 Everybody can hear clearly which is the output of the computer
Disadvantage:
• High quality external speaker was expensive and doesn’t come
with the computer.

13. PRINTER LASER PRINTER INK JET PRINTER
This is another • This printer usually use • This printer is a cheap
common output in the office because it printer which is very
device which make was quite. common for people
a hard copy of your • It print the large use
work in the amount of work very • This printer is best use
computer. quickly at home.
DOT MATRIX PRINTER
• This is the old version printer that doesn’t been use
anymore.
• This is useful when you need a carbon copy of it.
• It use a continuous paper.

14.  This printer is a very high quality printer which print very clearly
PLOTTER on the big paper.
 They are used by engineers, architects and map-makers to draw
plans of buildings, diagrams of machines or large scale maps.
There are three types of plotter:
 Flatbed plotters
 Drum plotters
 Pinch-roller plotters
LIGHT
The LED light can be connected to the computer which mean
we can turn it on or off easily
Advantage:
•It can be control by the computer
•There are many colour
Disadvantage:
•If the LED was too hot it is possible that it will be break.