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A hand-held device for optically reading bar codes on goods, labels & shelves is____________________?
Hamad Basic computer knowledge 01/12/2021
B. Light pen
D. Touch tablet
- Third generation computers__________________?
- A. Were the first to use integrated circuitry B. Used transistors insted of vaccum tubes C. Were the first to use built-in error detecting devices D. All of the above...
- Bits can be send over guided and unguided media as analog signal by___________________?
- A. digital modulation B. amplitude modulation C. frequency modulation D. phase modulation...
- CDs are of which shape ?
- A. Square B. Rectangular C. Round D. Information...
- Where do you find the clock and calendar in/on your computer ?
- A. Task bar B. Menu bar C. Desktop D. Start menu...
- The primary goal of a computer is to turn data into ___________________?
- A. ideas B. suggestions C. information D. reports...
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