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Digital Electronics and Logic Design Practice Test
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Digital logic is the underlying logic system that drives electronic circuit board design. Digital logic manipulates of binary values through printed circuit board technology that uses circuits and logic gates to construct the implementation of computer operations.
 

Digital Electronics and Logic Design Practice Test
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25 Questions

1. 3-to-8 decoder can be used to implement Standard SOP and POS Boolean expressions
2. The flip-flops which operate in synchronism with external clock pulses are known as
3. The greater the propagation delay, the
4. An AND circuit
5. In TTL the noise margin is between
6. What is the difference between the 54XX and 74XX series of TTL logic gates?
7. The Gray code for decimal number 6 is equivalent to
8. What is the indication of a short on the input of a load gate?
9. How many full adders are required to construct an m-bit parallel adder ?
10. How many illegitimate states has synchronous mod-6 counter ?
11. A TTL totem-pole circuit is designed so that the output transistors:
12. As a technician you are confronted with a TTL circuit board containing dozens of IC chips. You have taken several readings at numerous IC chips, but the readings are inconclusive because of their erratic nature. Of the possible faults listed, select the one that most probably is causing the problem.
13. Which of the following gate is a two-level logic gate
14. The low to high or high to low transition of the clock is considered to be a(n) _____________
15. A multiplexer with a register circuit converts
16. Excess-3 code is known as
17. In order to implement a n variable switching function, a MUX must have
18. The ring counter is analogous to
19. Which of the following is not a form of multivibrator?
20. The series of IC's are pin, function, and voltage-level compatible with the 74 series IC's.
21. The active switching element used in all TTL circuits is the
22. When both the inputs of edge-triggered j-k flop-flop are set to logic zero ......-
23. Convert the binary number 10110 to Gray code:
24. The diagram given below represents _____________
25. A field-programmable logic array can be programmed by the user and not by the manufacturer.

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