7. Complete the table with the correct words.

Components: 1. devices
Examples: keyboard, mouse
Use: used to 2. input information

Component: processor
Examples: one or more silicon 3.
Use: transforms signals

Components: output devices
Examples: 4. or speakers
Use: show the user the 5. of processing activity

Components: 6. devices
Examples: DVD drives, 7. drives
Use: store data processed by the digital system

Working procedure:
input step → 8. enters the digital system
processing → manipulates 9. quantities of information transformed into bits and produces a final result
10. phase → results are given out in a form that can be read and understood by the 11.

Using a computer
Text writing: a letter is 12. on the keyboard. Then each letter is converted into a 13. number and every word into a sequence of numbers. Finally, the numbers processed by the computer are released as readable text
Images: formed by millions of very small coloured dots (14. ), where every colour is represented by a binary number and processed by the computer
Sound: graphically transformed into a 15. ; every point on the waveform is represented by a binary number, and the higher the number of 16. , the better the sound quality.

9.1 Describe the process, from input to output, of a smartphone. Search the Internet for information if needed.

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9.2 Describe the process, from input to output, of a calculator. Search the Internet for information if needed.

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9.3 Describe the process, from input to output, of a digital voltmeter. Search the Internet for information if needed.

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9.4 Describe the process, from input to output, of a digital thermometer. Search the Internet for information if needed.

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