CSC211/311 (DIGITAL LOGIC)

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Name

What is the value of Z in the diagram

$\overline{A}+(A+B) + AB$

$\overline{A}+(A+B) + (A+B)$

$\overline{A}(A+B) + (A+B)$

$\overline{A}(A+B) + AB)$

None

What is the main advantage of a synchronous counter over an asynchronous counter?

Synchronous counters are simpler to design.

Synchronous counters require fewer flip-flops.

Synchronous counters have no delay between flip-flops.

Synchronous counters are faster because all flip-flops are triggered simultaneously.

None

Which of the following is the correct difference between a latch and a flip-flop?

A latch stores one bit of data, but a flip-flop stores two bits

power requirement of latch is more compare to flip-flop

A latch requires a clock signal, but a flip-flop does not.

Latches do not require a clock signal while flip-flop require clock signal

None

Which of the following gates is the complement of the AND gate?

OR gate

XOR gate

NAND gate

NOR gate

None

In a T-flip flop, which of the following occurs when the T input is high?

The output is always 1.

The output stays the same as the previous state.

The output toggles between 0 and 1.

The output is always 0.

None

what is the expression for this logic diagram

$\overline{(AB + \overline{c})D}$

$\overline{(A + B)D + \overline{c} }$

$\overline{(A + B) \cdot (\overline{c} + D)}$

$\overline{A \cdot (B + c') \overline{c}D}$

None

What is the main characteristic of a D flip-flop?

The output follows the input on the next clock edge.

It requires two inputs to operate.

The output toggles based on the clock signal.

It has no clock input.

None

Assume you are to design a finite state machine to control industrial robot which operates 128 unique states encoded in binary. How many D-flip flops would you need in your design. kindly supply your answer in the space below

How many T flip-flops are required to design a 4-bit binary counter?

10.

Which of the following is true for an up-counter?

It counts in an ascending order, from 0 to the maximum count.

It can only count to a fixed number.

It operates only in binary.

It counts in a descending order.

None

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