Exercise 1. Answer the following questions.
1) What types of technologies used for graphics tablets do you know?
2) How do the wires operate in passive tablets?
3) What signal allows the tablet to sense the stylus position?
4) In what component do the active tablets differ from the passive tablets?
5) What is the main principle of the optical tablet?
6) What is the main feature of the acoustic tablet?
7) What tablet works by generating and detecting an electromagnetic signal?
8) What signal is used in the capacitive tablets?
Exercise 2. Say True or False.
1) The tablet can use the received signal to also determine the distance of the stylus from the surface of the tablet.
2) Compared to touch-sensitive touchscreens, a graphics tablet generally offers lower precision.
3) The passive tablet doesn’t generate an electromagnetic signal, which is received by the LC circuit in the stylus.
4) Unfortunately, modern designs are not able to read position in three dimensions.
5) Acoustic tablets operate by a very small digital camera in the stylus.
6) A small sound generator is mounted in the optical acoustic tablet stylus.
7) The signal in the capacitive tablet is generated in the grid of wires.
8) Many multi-touch tablets use capacitive sensing.
Exercise 3. Match each word with its meaning.
| 1) grid
| a) a complete path through which an electric current can flow
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| 2) stylus
| b) an electrical device consisting of a length of wire arranged in a coil for converting the level of a voltage, producing a magnetic field, or adding inductance to a circuit
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| 3) wire
| c) a slope or angle
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| 4) coil
| d) metal drawn out into the form of a thin flexible thread or rod
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| 5) circuit
| e) a penlike device used to input handwritten text or drawings directly into a computer or for input on a touch-sensitive monitor
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| 6) tilt
| f) a network of lines that cross each other to form a series of squares or rectangles
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