Input and Output devices LO Recognise and compare

Input and Output devices LO: Recognise and compare input and output and storage devices. Learning outcome: Give correct response to exam-type questions o Input devices put data into the computer. o Output devices process data out of the computer.

Examples of input devices Keyboard Mouse Touch pad Webcam/ Security camera Joystick Bar code Reader Scanner Tracker ball Digital Camera

More input devices Concept/specialised Keyboard Midi instruments Foot operated mouse Sensors Button Graphics pad

Output devices VDUs CRT Monitor Braille printer LCD/TFT Monitor Robot arm / Acuator Laser Printer Speaker Ink Jet Printer Touch Screen

Storage devices Magnetic tape Hard disk USB disk CD ROM Solid State HD Cost Medium High Low High Speed V. 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… o Which of these are used as computer input devices? A. Keyboard B. Inkjet printer C. VDU D. Plotter

Exam Question… o Which of these can be used as both input and output devices? A. Mouse B. Touchscreen C. Touch Pad D. Barcode reader

Exam Question o Which of these are output devices A. Magnetic strip reader B. Mouse C. Webcam D. Tracker Ball

Exam Question o Which of these are output devices A. VDU B. CRT Monitor C. Laser Printer D. 17” monitor

Exam Question o 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. etc… 3

Storage questions o o 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

List the input and output devices on a tablet computer