INPUT AND OUTPUT DEVICES: OUTPUT

Question 1

Types of output devices?

Answer 1

1. Basic-essential eg monitor printer speakers

2. Special-non essential eg plotter

Question 2

types of printers?

Answer 2

1. Inkjet-sprays ink to the paper
2. Laserbeam-focused beam of light
3. Impact-Physical contact
4. Thermal-heat receipts

Question 3

What is the function of a plotter?

Answer 3

For printing high quality graphics eg building blueprints

Question 4

Difference between Virtual Reality and Augmented Reality

Answer 4

VR- Creates a simulated 3D environment. No ambient light from the surrounding
AR-Superimposes images and audio over the real world. Allows ambient light from the surroundings

Question 5

Draw the Von Neumann Architecture

Answer 5

See in Exe book

Question 6

What is accessibility and give examples

Answer 6

How easy to use a system is for disabled people eg
Voice rec & speech to text software instead of typing
Screen Reader- text to audio
Screen Magnifier
On screen Keyboard that can use a pointing device

Question 7

What is ergonomics and give an example

Answer 7

Setting up the computer and work place in such a way to meet the users needs and reduce strain on the user eg an ergonomic keyboard which may come in with a built in palm or wrist support

Question 8

Practices of a good working environment

Answer 8

1. Appropriate positioning to reduce strain
2. Mouse Mat
3. Moniter filter
4. Adequate lighting and ventilation
5. Frequent breaks
6. Back supporting chair
7. Make sure power points are not overloaded

Question 9

Health Problems associated with a computer

Answer 9

1. Repetititive strain injury(wrists
2. Eye strain
3. Back problems