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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.

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Input and output devices

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
Examples of input devices

Keyboard

Mouse

Touch pad

Tracker ball

Webcam/ video digitiser

Digital Camera

Joystick

Magnetic strip / smart cards

Scanner


More input devices
More input devices

Midi instruments

Sensors


Output devices
Output devices

VDUs

CRT Monitor

Ink Jet Printer

LCD/TFT Monitor

Laser Printer

Dot matrix printer

Graph plotter

Speaker

Barcode Reader


Storage devices
Storage devices

Magnetic tape

Hard disk

USB disk

CD ROM

Floppy disk

Cost

Medium

High

Medium

Low

Low

Slow

Fast

Medium

Med/ Slow

V. Slow

Speed

High

High

Medium

Medium

Low

Capacity


Optical storage devices
Optical storage devices

CD-ROM

CD-R (Recordable)

DVD Digital Veratile Disk


Exam question
Exam Question…

  • Which of these are used as computer input devices?

B. Inkjet printer

A. Keyboard

C. VDU

D. Plotter


Exam question1
Exam Question…

  • Which of these can be used as both input and output devices?

B. Touch-screen

A. Mouse

C. Touch Pad

D. Barcode reader


Exam question2
Exam Question

  • Which of these are output devices

A. Magnetic strip reader

B. Mouse

C. Webcam

D. Tracker Ball


Exam question3
Exam Question

  • Which of these are output devices

A. VDU

B. CRT Monitor

C. Laser Printer

D. 17” monitor


Exam question4
Exam Question

  • Give three advantages of using a laser printer rather than a dot matrix

1 Quiet

2 Better quality

3 Faster


Exam question5
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
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

8-bit byte

Gigabyte

16-bit byte


Input and output devices
Prep

User interface for entering numbers, text and symbols

Keyboard

Input

Keystrokes

Show graphics and writing to user

Monitor

Output

Light

Converts graphics on paper to electronic data

Scanner

Input

Graphics

Prep: Complete the above table for all input and output devices in the ICT textbook pages 2-7