Input and Output devices
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Input and Output devices Input devices put data into the computer. Output devices process data out of the computer. LO: Recognise and compare input and output and storage devices. Learning outcome: Give correct response to exam-type questions Lesson 1
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Lesson 1. Input and Output devices. Input devices put data into the computer. Output devices process data out of the computer. LO: Recognise and compare input and output and storage devices. Learning outcome: Give correct response to exam-type questions. Examples of input devices. Keyboard. - PowerPoint PPT Presentation
Transcript of Input and Output devices
Input and Output devices
Input devices put data into the computer.
Output devices process data out of the computer.
LO: Recognise and compare input and output and storage devices.
Learning outcome: Give correct response to exam-type questions
Lesson 1
Examples of input devices
Keyboard MouseTouch pad
Tracker ball
Webcam/ video digitiser
Joystick Magnetic strip / smart
cards
ScannerDigital
Camera
More input devices
Midi instruments Sensors
Output devices
CRT MonitorLCD/TFT Monitor
VDUs
Laser Printer Ink Jet Printer
Dot matrix printer Graph plotter Speaker Barcode Reader
Storage devices
Magnetic tape Hard disk USB disk CD ROM Floppy disk
Cost Medium High Medium Low Low
Speed Slow Fast Medium Med/ Slow V. Slow
Capacity High High Medium Medium Low
Optical storage devices
CD-ROM CD-R (Recordable) DVD Digital Veratile Disk
Exam Question…
Which of these are used as computer input devices?
A. Keyboard B. Inkjet printer
C. VDU D. Plotter
Exam Question…
Which of these can be used as both input and output devices?
A. Mouse B. Touch-screen
C. Touch Pad D. Barcode reader
Exam Question
Which of these are output devices
A. Magnetic strip reader
B. Mouse
C. Webcam D. Tracker Ball
Exam Question
Which of these are output devices
A. VDU B. CRT Monitor
C. Laser Printer D. 17” monitor
Exam Question
Give three advantages of using a laser printer rather than a dot matrix
1 Quiet
2 Better quality
3 Faster
Exam Question Give one reason why a mouse may not be
suitable for use with a laptop computer
1 Can get lost
2 May not be enough room to use it.
3 etc…
Storage questions
How is data stored in a computer? What is a ‘bit’ What is a collection of bits called? Arrange the following into ascending
order:
Megabyte Bit Kilobyte
16-bit byteGigabyte8-bit byte
Prep
Keyboard Input Keystrokes
User interface for entering numbers, text and symbols
Monitor
Device Name Input or Output Data Description
Output
LightShow graphics and writing to user
Scanner Input GraphicsConverts graphics on paper to electronic data
Prep: Complete the above table for all input and output devices in the ICT textbook pages 2-7
Speed Cost Colour? Noise
Inkjet
Laser
Colour Laser
Dot Matrix
