DIGITAL ELECTRONICS - Practice Mode

1) What is the power supply required to operate the most standard TTL ICs properly?

+1.5V to +2.5V -1.5V to -2.5V +4.75V to +5.25V +7.5v to +12V

Correct Answer: +4.75V to +5.25V

2) What is the power dissipation of the standard TTL chip?

5 mW/gate 10 mW/gate 15 mW/gate 20 mW/gate

Correct Answer: 10 mW/gate

3) What is the purpose of using binary coded decimal (BCD) system in digital circuits?

Storing the data inputs Control the binary system Interface to binary system Segregating the input parameters

Correct Answer: Storing the data inputs

4) Which gate is called universal gate?

AND NOT NOR OR

Correct Answer: NOR

5) How many inputs are available in the 7447 BCDto- seven segment decoder used to drive the LED display?

One Four Seven Eight

Correct Answer: Four

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