Output devices questions and answers
Q1. Suggest some typical uses for dot matrix printers that make them clearly more suitable than inkjets or laser jets.
A1. Legal offices or petrol stations, where they require a carbon copy of the exact signature of someone.
Q2. Colour inkjets are less common than colour ink jets in people’s private homes. Why might this be?
A2. Physical size is much larger and the cost of consumables is many times more than for an inkjet.
Q3. Suggest an advantage of a laser jet printer over an inkjet.
A3. Higher quality.
Q4. Suggest who might need to use a plotter in their business and why.
A4. Plotters are used to plot very large, accurate, colour drawings such as those needed by engineers, architects and designers - standard printers commonly only print up to A4 (although you can get printers that print larger sizes).
Q5. What does CRT stand for?
A5. Cathode Ray Tube.
Q6. State two advantages of TFT screens compared to CRT screens.
A6. Takes up less space, uses less power, easier on the eye because of less glare, reduces headaches.
Q7. Which is bigger, A3, A4, A5 or A6 paper?
A7. A3.
Q8. What's a klaxon?
A8. It's a very loud siren often used in noisy factories e.g. for fire alarms.
Q9. What output device might be useful to listen to music without disturbing others in a library?
A9. Headphones!
Q10. Do some research on the Internet. What is a 3D printer? How do they work? There have been some interesting applications, from printing out a real gun to producing a 3D model of a baby in a womb rather than the more traditional scanned photo. Find two other interesting applications of 3D printers.