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 MouseTouch pad

Tracker ball

Webcam/ Security camera

Joystick Bar code Reader Scanner

Digital Camera

More input devices

Midi instruments Sensors

Concept/specialised Keyboard

Foot operatedmouse

Graphics padButton

Output devices

CRT MonitorLCD/TFT Monitor

VDUs

Laser Printer Ink Jet Printer

Robot arm / Acuator

Speaker Touch ScreenBraille printer

Storage devices

Magnetic tape Hard disk USB disk CD ROM Solid State HD

Cost Medium High Low Low High

Speed V. Slow Fast Fast Slow Fast

Capacity Medium High Medium Low Medium

Some devices can be input and output

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 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

List the input and output devices on a tablet computer