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Presentation on Input and Output Devices
Presentation on Input and Output Devices
Presentation on Input and Output Devices
n
Do you ever
wonder how
information
gets into your
computer and
how comes out
in a form you
can use ? It is
possible with
Input
Devices
Definition :
“An

electromechanical device that
can be used to enter data and
instructions into a computer.”
Keyboard
“A keyboard is a human interface device which
is represented as a layout of button or keys.”
It has some Features as
• Typewriter keyboard with numeric keypad
• Special purpose keys
• Toggle and combination keys
Definition :
“An input device used to control a pointer
on the screen.”

Mouse:

“mouse can be used to Control and manipulate
cursor movement on monitor.”
Types of Mouse :

i) Mechanical
or wireless

ii) Optical

iii) Cordless
Some pointing devices
are
Trackball
Pointing Stick
Joystick
Touch Pad
Touch Screen
Light Pen
Optical Input
Devices
“optical input devices that uses
light as a source of input. They
eliminate the need for manual
entry of data, thus accuracy
Scanner:
increases.

“scanners can be used to copy
the image or text on paper into a
digital format that can be used
by the computer.”
Other Optical Input
Devices are:

Optical scanners
Flatbed
Portable

Bar code readers:
“a barcode reader is an
electronic device which
is used for reading
printed barcodes. This
device directs a light
beam across the bar
code while it measures
Character and mark recognition
devices
Scanners that recognize
special characters & marks
Magnetic ink character
recognition (MICR)
Optical-character recognition
(OCR)
Optical-mark recognition (OMR)
Audio Input
Definition :
Devices record the analog
“audio input devices
sound and convert it into digital form for
further processing.”
Some Audio input devices are :

Voice recognition

microphone

Musical Instrument Digital
Video Input
Definition :
“ video input devices that can be
used to entering full motion
recording into a computer .“
Some video input devices are

digital camera

video capture
Output Devices
Definition
“output devices can be used to receive
information from the computer “
The output can be in two forms:
Soft copy
Hard copy
Monitor
Definition
“a monitor is a peripheral device which
displays computer output on a screen .
Screen output is referred to as soft
copy”
 Features
 Resolution-pixels
 Dot pitch
 Refresh rat
 Size

 Types of monitors
Cathode Ray Tube (CRT)
 Liquid crystal Display (LCD)

Printer
Definition
“a printer is a peripheral device that produces a
physical copy or hard copy of the computer’s
output.”
Types of Printer :
Impact Printers
• Dot Matrix Printer
• Daisy Wheel Printer
Non Impact Printers
• Laser Printer
• Ink-Jet Printer
• Thermal Printer
Plotter
Definition
“a plotter is an output device
that is used to produce high
quality graphics in a variety
of colors.”
Types of Plotter
 Flatbed Plotter
 Drum plotter
Audio output
Devices
Definition
“audio output devices can be used to
translates audio information from
the computer into sounds that
people can understand.”
 Common audio output devices
 Speakers
 Headphones
Projector
Definition
“projector can be used to
displays computer
information on big screen so
that many will able to see
the show.”
Computer Output Microfilm
(COM)
 This technology is used to record

computer output as a microscopic
film images.
 Information is recorded on a roll
of film.
 COM devices are used applications
where there are large volumes of
data.
Combination Input and
Output Devices
Many devices combine input and output
capabilities
 Fax machines
 Multifunction devices

 Internet telephones

Telephony
 and Voice-over IP (VoIP)
 known as

 Terminals
Fax machines
Definition :
“a fax machine refers to a device or
equipment that does telephonic
transmission of scanned material.
It scans the original document and
converts it into a bitmap. It then
uses electronic signals to send the
document to another recipient. “
Terminals
 An input and output device
 Connects to a mainframe or

server
 Types of terminals
 Dumb terminal

 Intelligent terminal
 Network terminal
 Internet terminal
Presentation on Input and Output Devices
Presentation on Input and Output Devices

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Presentation on Input and Output Devices

  • 4. n Do you ever wonder how information gets into your computer and how comes out in a form you can use ? It is possible with
  • 5. Input Devices Definition : “An electromechanical device that can be used to enter data and instructions into a computer.”
  • 6. Keyboard “A keyboard is a human interface device which is represented as a layout of button or keys.” It has some Features as • Typewriter keyboard with numeric keypad • Special purpose keys • Toggle and combination keys
  • 7. Definition : “An input device used to control a pointer on the screen.” Mouse: “mouse can be used to Control and manipulate cursor movement on monitor.” Types of Mouse : i) Mechanical or wireless ii) Optical iii) Cordless
  • 8. Some pointing devices are Trackball Pointing Stick Joystick Touch Pad Touch Screen Light Pen
  • 9. Optical Input Devices “optical input devices that uses light as a source of input. They eliminate the need for manual entry of data, thus accuracy Scanner: increases. “scanners can be used to copy the image or text on paper into a digital format that can be used by the computer.”
  • 10. Other Optical Input Devices are: Optical scanners Flatbed Portable Bar code readers: “a barcode reader is an electronic device which is used for reading printed barcodes. This device directs a light beam across the bar code while it measures
  • 11. Character and mark recognition devices Scanners that recognize special characters & marks Magnetic ink character recognition (MICR) Optical-character recognition (OCR) Optical-mark recognition (OMR)
  • 12. Audio Input Definition : Devices record the analog “audio input devices sound and convert it into digital form for further processing.” Some Audio input devices are : Voice recognition microphone Musical Instrument Digital
  • 13. Video Input Definition : “ video input devices that can be used to entering full motion recording into a computer .“ Some video input devices are digital camera video capture
  • 14. Output Devices Definition “output devices can be used to receive information from the computer “ The output can be in two forms: Soft copy Hard copy
  • 15. Monitor Definition “a monitor is a peripheral device which displays computer output on a screen . Screen output is referred to as soft copy”  Features  Resolution-pixels  Dot pitch  Refresh rat  Size  Types of monitors Cathode Ray Tube (CRT)  Liquid crystal Display (LCD) 
  • 16. Printer Definition “a printer is a peripheral device that produces a physical copy or hard copy of the computer’s output.” Types of Printer : Impact Printers • Dot Matrix Printer • Daisy Wheel Printer Non Impact Printers • Laser Printer • Ink-Jet Printer • Thermal Printer
  • 17. Plotter Definition “a plotter is an output device that is used to produce high quality graphics in a variety of colors.” Types of Plotter  Flatbed Plotter  Drum plotter
  • 18. Audio output Devices Definition “audio output devices can be used to translates audio information from the computer into sounds that people can understand.”  Common audio output devices  Speakers  Headphones
  • 19. Projector Definition “projector can be used to displays computer information on big screen so that many will able to see the show.”
  • 20. Computer Output Microfilm (COM)  This technology is used to record computer output as a microscopic film images.  Information is recorded on a roll of film.  COM devices are used applications where there are large volumes of data.
  • 21. Combination Input and Output Devices Many devices combine input and output capabilities  Fax machines  Multifunction devices  Internet telephones Telephony  and Voice-over IP (VoIP)  known as  Terminals
  • 22. Fax machines Definition : “a fax machine refers to a device or equipment that does telephonic transmission of scanned material. It scans the original document and converts it into a bitmap. It then uses electronic signals to send the document to another recipient. “
  • 23. Terminals  An input and output device  Connects to a mainframe or server  Types of terminals  Dumb terminal  Intelligent terminal  Network terminal  Internet terminal