BASIC GATES COMBINATIONAL CIRCUITS FLI - Practice Mode

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

One Four Seven Eight

Correct Answer: Four

Explanation:

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2) 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

3) What is the propagation delay of the standard TTL chip?

5 ns 8 ns 10 ns 12 ns

Correct Answer: 10 ns

4) 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

5) What is the decimal conversion number for the octal number (2374)8?

(1266)10 (1276)10 (1286)10 (1296)10

Correct Answer: (1276)10

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