LO1: Computer Hardware

Seite 1

1.1- Understand Computer Hardware

1.1.1 & 1.1.5- Computer Hardware & Communication Hardware

Printer (General)- Is a device that transfers digital information to paper

Benefits- Convenience and Ease of reading

Limitations- Cost and Environmental Factors

Visual Display Unit (VDU)- it displays images generated by a computer

Benefits- Cheap,Reliable and Can display in a wider range of colour

Limitations- A permanent copy

Plotter- 15 specialist printers which draw high quality images

Benefits- Accurate and Large printouts

Limitations- Cost and Slow

Speaker/Headphones- Output audio

Benefits- Cheap and High quality of sound

Limitations- Sound has to be converted

Braille Terminal- Is used for displaying braille characters

Benefits- Easy to learn and Adapts to technology

Limitations- Cannot be learned by people who don't know braille and errors permanent