
Verilog Module 3
Quiz
•
Design
•
University
•
Practice Problem
•
Hard
Mr.G. Ravi Kumar Reddy undefined
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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What function does the following switch-level model realize?
module some_gate (in1, in2, out);
input in1, in2;
output out;
supply1 vplus;
supply0 vgnd;
wire t;
pmos (t, vplus, in1);
pmos (out, t, in2);
nmos (out, vgnd, in1);
nmos (out, vgnd, in2);
endmodule
NAND
Exclusive OR
AND
None of these
2.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Suppose we are constructing a 16-to-1 multiplexer using cmos switches. In addition to four NOT gates, the number of cmos switches required will be ……
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Which of the following statements is/are false?
A tranif0 switch allows bidirectional flow of data between the two end terminals when the control signal is 0.
A tranif0 switch allows bidirectional flow of data between the two end terminals when the control signal is 1.
A tranif1 switch allows bidirectional flow of data between the two end terminals when the control signal is 0.
A tranif1 switch allows bidirectional flow of data between the two end terminals when the control signal is 1.
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Which of the following is/are true for user defined primitives in Verilog?
Can be used to specify a combinational circuit with any number of outputs.
Can be used to specify a combinational circuit with a single output.
Can be used to specify a finite state machine with one or two state variables
Can be used to specify a finite state machine with only one state variable.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is/are not true for “generate” blocks?
Multiple copies of code blocks are generated dynamically before simulation or synthesis.
Can be used to instantiate multiple copies of some module.
Must be used along with a variable of type “genvar”.
All of these
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the following Verilog module do?
module xor_bitwise (f, a, b);
parameter N = 16;
input [N-1:0] a, b;
output [N-1:0] f;
genvar p;
generate for (p=0; p<N; p=p+1)
begin
xorlp
xor XG(f[p],a[p],b[p]);
end
endgenerate
endmodule
Generates the sum of the two N-bit numbers “a” and “b”, and stores it in “f”
Performs the bitwise XOR of “a” and “b”, and stores it in “f”
Computes whether the number of bits in “a” and “b” are odd
None of these
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What will the following code segment generate on synthesis?
always @(posedge clock)
begin
data3 <= din;
data2 <= data3;
data1 <= data2;
data0 <= data1;
end
Four D flip-flops all fed with the data “din”.
A 4-bit shift register.
A 4-bit parallel-in parallel-out register.
None of these.
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