Input devices enter raw data into a computer which is then processed by the CPU. There are two types of input devices: manual devices like keyboards and mice that require human interaction, and automatic devices like sensors and card readers that input data without human involvement. Output devices communicate the results of the CPU's processing to the user in various formats like printed paper, sound, and on-screen displays. Common output devices include monitors, printers, speakers, and control actuators.

1. Input and Output Devices
Jessica Pinijarom 10A

2. What is it?
• Input devices are like raw data entered
into the computer
• Then it processes the data and produces
outputs that we can understand
• Processing is mainly handled by the CPU
(Central Processing Unit)

3. Input Devices
• There are two types of input devices,
there are so many input devices that they
are separated.
• There is a Manual Input device and an
Automatic Input device

4. Manual Input devices
• Manual Input devices are devices which
we have to work out ourselves. They are
not automatic and there can be mistakes.
Examples:
• Keyboards:
Alphanumeric Keyboard, Numeric keyboard
and Pin pad

5. • Audio/ Visual Devices
Scanner, digital camera, video camera,
webcam, microphone
• Pointing Devices: used in GUIs
Mouse, Touchpad/trackpad, trackball/tracker
ball, touch screen, graphics tablet, joystick,
joypad, light pen

6. Automatic Input Devices
All data can be put into a computer using a
keyboard, but would often be slow and
there could be mistakes. Automatic input
devices can never be wrong, because it is
accurate.
Examples:
• Card readers:
Magnetic strip reader, smart card/ ‘chip’
reader,

7. • Reading Text/codes:
MICR reader, OMR scanner,
OCR scanner, barcode
reader/scanner
• Sensors
Analogue to Digital
Converter (ADC)

8. Output Devices
• The computer communicates with the user
by an input device
• From an input device, the CPU processes
it and its results are on the output device.
• Output formats are usually printed paper,
sound, video and on-screen documents.

9. Examples
• Audio Visual:
CRT monitor, Flat-screen Monitor (TFT or
LCD), digital/multimedia projector, speakers.
• Printing/Plotting: (hardcopy)
Dot Matrix Printer, inkjet printer, laser
printer, plotter,

10. • Control Actuators: An actuator is a device
controlled by the computer that can affect
the real-world
Motor, pumps, buzzer, lights, heaters/coolers