Input+and+output+(N4&N5)

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1. For each of the input devices shown in the presentation, explain how it works and say what information they input.

2. For each of the output devices shown in the presentation, explain how it works and say what information they output.

3. Printers come in two different forms: Laser and inkjet. (a) What is the difference between inkjet and laser printers? (b) Which do you think is more expensive? (c) Which do you think is better, and why?

4. Monitors come in 2 different types: CRT and TFT (a) What does CRT stand for? (b) What does TFT stand for? (d) Which type of monitor are you currently using?

5. Two ways of getting information into a computer are voice recognition and handwriting recognition. (a) Explain how voice recognition works (b) Explain how handwriting recognition works

6. Graphics card investigation (a) What is a graphics card (b) Describe how it might be used?

7. Sound card investigation (a) What is a sound card (b) Describe how it might be used?

6. Think about the computer of 25 years time. Design one device which we will be using for input or output which doesn't currently exist.

Group task
For this task you will work in groups of 3 or 4. Your teacher will give your group an input or output device to review. Your task is to create a presentation which you will share with the class.

Your presentation should include:
 * an explanation of what the device does and how it works
 * key features of the device
 * price guide (how much for a basic model, how much for a high end model)
 * what are the differences between the basic model and high end model
 * any relevant specifications
 * images of the device