Digital Design Quiz - Round 4

For the given K-map, what is the simplified equation?

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• Answer is missing

Let X=101101 and Y=110001 be two numbers represented in binary. The two’s compliment of the product of these two numbers is?

• 100100100100

• 011011011100

• 110110111011

• Answer is missing

For the given functional block, the Boolean variables x, a and b are inputs and y is the output. Which of the following digital design blocks is most suitable for implementing the function?

• Priority Encoder

• De-Multiplexer

• Full Adder

• Multiplexer

Which of the following are true about flip-flops

a.Flip-flops are sensitive to pulses.

b.A flip flop circuit can be constructed by two NAND gates or with two NOR gates.

c.Counters, shift registers, registers and frequency dividers are all examples of applications of flip-flops.

• only a & b

• only b & c

• only a & c

• all are true

Select the most suitable word for the given blanks

a. The default value for reg data type is ______.

b. To suspend a simulation, _____ system task can be used.

c. Special parameters in a specify block can be defined using _____.

• 0, $finish, specparam

• X, $finish, param

• 0, $stop, param

• X, $stop, specparam

Identify the correct statement related to `timescale compiler directives

`timescale 1ps / 1ps

The above example shows a

• A time unit of 1ps with a 2 decimal places of accuracy

• A time unit of 1ps with a 1 decimal places of accuracy

• A time unit of 1ps with a zero decimal places of accuracy

• None of the above is correct

Consider the following example code snippet and identify the correct statement/statements related to scheduling semantics

• The variable val will be assigned 0 at time 0 and then 1 at time 1.

• The variable val will be assigned 0 and then 1 at the end of time 0.

• There will be two events getting added to the NBA region.

• The variable val will be assigned to values in parallel without considering the execution order  

Identify the correct value of the constant given below 

6_24

• It’s a 4 bit decimal constant 6024

• Unsized decimal constant 6024

• Unsized decimal constant 624

• It’s a 12 bit decimal constant 624

Identify the correct statement/statements about transistors

• IE  = IC + IB for a transistor

• The output impedance of a transistor is very low

• The common base transistor arrangement gives the highest power gain in transistor arrangements 

• The Collector of a transistor is usually bigger than the Base and Emitter

Identify the simulator output for the code snippet shown

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