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Directions to Solve

In the following questions choose the word which is the exact OPPOSITE of the given words.

Q1: FICKLE

A Sincere

B Steadfast

C Courageous

D Humble

Q2: Which of the following sentences are correct about a switch loop in a C program?
1: switch is useful when we wish to check the value of variable against a particular set of values.
2: switch is useful when we wish to check whether a value falls in different ranges.
3: Compiler implements a jump table for cases used in switch.
4: It is not necessary to use a break in every switch statement.

A 2

B 2,4

C 1,2

D 1,3,4

Q3: When the inputs to a flip-flop are changing at the same time that the active trigger edge of the input clock is making its transition, this condition is called:

A slave loading

B toggling

C racing

D pulse timing

Q4: Is the propagation delay from the clock to the output for the 7476 the same as the delay from the set or reset to the output?

A yes

B no

Q5: What is the difference between setup time and hold time?

A Setup time occurs after the active clock edge, hold time occurs before the active clock edge.

B Setup time occurs before the active clock edge, hold time occurs after the active clock edge.

C Setup time and hold time both occur at the active clock edge.

Q6: Define a race condition for a flip-flop.

A The inputs to a trigger device are changing at the same time as the active trigger edge.

B The inputs to a trigger device are changing slightly before the active trigger edge.

C The inputs to a trigger device are changing slightly after the active trigger edge.

Q7: Which of the following flip-flop timing parameters indicates the time it takes a Q output to respond to a Cp input?

A fmax

B tw (L), tw (H)

C tPHL, tPLH

D ts, th

Q8: How much setup time (ts) is required for the 74LS76?

A 10 ns

B 20 ns

C 40 ns

D 5 ns

Q9: Why should a LED be pulled LOW from a logic gate rather than pulled HIGH?

A HIGH-level current is larger.

B LOW-level current is smaller and HIGH-level current is larger.

C LOW-level current is smaller.

D LOW-level current is larger.

Q10: Why should a LED be pulled LOW from a logic gate rather than pulled HIGH?

A LOW-level current is smaller.

B LOW-level current is smaller and HIGH-level current is larger.

C LOW-level current is larger.

D HIGH-level current is larger.