Explore topic-wise MCQs in Vhdl.

This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Vhdl knowledge and support exam preparation. Choose a topic below to get started.

1.

Which of the following is exponentiation operator?

A. ^
B. *
C. /=
D. **
Answer» E.
Discussion
2.

ABS operator is used to _________

A. Shift the operand
B. Gives absolute value for the operand
C. Give the result as nearest integer
D. To synthesize the result
Answer» C. Give the result as nearest integer
Discussion
3.

What is the type of result for comparison operators?

A. Boolean
B. Integer
C. Numeric
D. Array
Answer» B. Integer
Discussion
4.

The operators like =, /=, , >= are called _________

A. Arithmetic operators
B. Concatenation operators
C. Logical operators
D. Relational operators
Answer» E.
Discussion
5.

What is the type of result of MOD operator?

A. Numeric
B. Integer
C. Array
D. Bit
Answer» C. Array
Discussion
6.

The operator ‘&’ is called the_____ operator.

A. Logical AND operator
B. Bitwise AND operator
C. Arithmetic addition operator
D. Concatenation operator
Answer» E.
Discussion
7.

______ operator is unary as well as binary operator.

A. –
B. *
C. /
D. **
Answer» B. *
Discussion
8.

Which of the following VHDL statement is equivalent to NAND operation, if y, a and b are SIGNALS?

A. y <= NOT a AND bb) y <= NOT a OR NOT bc) y <<= NOT a AND NOT bd) y <<= NOT (a OR
B. y <= NOT a OR NOT b
C. y <<= NOT a AND NOT b
D. y <<= NOT (a OR b)
Answer» C. y <<= NOT a AND NOT b
Discussion
9.

In the following statements, y and z are equivalent to________

A. y <= a’+b’ and z <= (a.b)’b) y <= (a+
B. ’b) y <= (a+b)’ and z <= a’+b’
C. y <= a’+b and z <= a’+b’
D. y <= a+b’ and z <= a.bView Answer
Answer» D. y <= a+b’ and z <= a.bView Answer
Discussion
10.

Which of the following logical operator has the highest precedence?

A. NAND
B. NOR
C. NOT
D. EXOR
Answer» D. EXOR
Discussion
11.

Refer to the VHDL code given below, which is the legal assignment statement?

A. y <= (1 => ‘1’, OTHERS => ’0’);
B. y := “0100”;
C. y => “0100”;
D. y => x;View Answer
Answer» B. y := “0100”;
Discussion
12.

A VARIABLE y is declared of STD_LOGIC_VECTOR type of 4 bits, if you want to assign 1001 to y, then what is the write assignment statement?

A. y <= “1001”
B. y := “1001”
C. y <= ‘1’, ‘0’, ‘0’, ‘1’
D. y => “1001”
Answer» C. y <= ‘1’, ‘0’, ‘0’, ‘1’
Discussion
13.

Which of the following is not an assignment operator?

A. <=
B. :=
C. =>
D. =
Answer» E.
Discussion