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