Explore topic-wise MCQs in Vhdl.

This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Vhdl knowledge and support exam preparation. Choose a topic below to get started.

1.

What is the correct syntax to define a function which overloads any operator, say + operator for bit_vector type?

A. FUNCTION + (L : bit_vector, R : bit_vector) RETURN bit_vector IS
B. FUNCTION ‘+’ (L : bit_vector, R : bit_vector) RETURN bit_vector IS
C. FUNCTION “+” (L : bit_vector, R : bit_vector) RETURN bit_vector IS
D. FUNCTION (+) (L : bit_vector, R : bit_vector) RETURN bit_vector IS
Answer» D. FUNCTION (+) (L : bit_vector, R : bit_vector) RETURN bit_vector IS
Discussion
2.

It is possible to define a new operator ++ in VHDL.

A. True
B. False
Answer» C.
Discussion
3.

In the two functions defined below, which would generate an error?

A. Only function 1
B. Only function 2
C. Both functions 1 and 2
D. No errorView Answer
Answer» E.
Discussion
4.

A user wants to perform a different operation on an array type and the function can be overloaded but the parameter is of same base type. How to do the same by using a single function?

A. By using conditional statement with ‘LENGTH attribute
B. By using loop statement with ‘LENGTH attribute
C. By using unconstrained array in parameters
D. It can’t be done by using single function
Answer» B. By using loop statement with ‘LENGTH attribute
Discussion
5.

Which of the following function definition will return an error?

A. Only first call
B. Only second call
C. Both first and second call
D. No errorView Answer
Answer» C. Both first and second call
Discussion
6.

Which of the following is true about the overloading of ‘+’ and ‘-‘ operators?

A. They can be defined as binary operators only
B. They can be defined as unary operators only
C. They can be defined as ternary operators only
D. They can be defined as either binary or unary operators
Answer» E.
Discussion
7.

ONLY_FIRST_CALL?$

A. Only second call
B. Both first and second call
C. No error
Answer» B. Both first and second call
Discussion
8.

A_user_wants_to_perform_different_operation_on_an_array_type_and_the_function_can_be_overloaded_but_the_parameter_is_of_same_base_type._How_to_do_the_same_by_using_a_single_function?$

A. By using conditional statement with ‘LENGTH attribute
B. By using loop statement with ‘LENGTH attribute
C. By using unconstrained array in parameters
D. It can’t be done by using single function
Answer» E.
Discussion
9.

Only function 1

A. Only function 2
B. Both functions 1 and 2
C. No error
Answer» D.
Discussion
10.

Apart from subprogram and operator overloading, which of the following can be overloaded in VHDL?

A. Attributes
B. Types
C. IF statement
D. CASE statement
Answer» C. IF statement
Discussion
11.

Which of the following is true about overloading of ‘+’ and ‘-‘ operators?$

A. They can be defined as binary operators only
B. They can be defined as unary operators only
C. They can be defined as ternary operators only
D. They can be defined as either binary or unary operators
Answer» E.
Discussion
12.

By overloading + operator, it is possible to _________

A. Use binary addition
B. Use arithmetic addition
C. Use it as subtract operator
D. Use it as ternary operator
Answer» B. Use arithmetic addition
Discussion
13.

What is the necessary condition to overload parameters type of a subprogram?

A. The base type of two parameters must be same
B. The parameters must have a different name
C. The parameters can’t be of integer type
D. The base type of two parameters must differ
Answer» E.
Discussion
14.

Using overloaded subprograms and operators increase readability of code.

A. True
B. False
Answer» B. False
Discussion
15.

Overloading a subprogram allows subprogram to ________

A. Operate on objects of different types
B. Operate on objects of same name
C. Operate on objects of different name
D. Operate on objects of same types
Answer» B. Operate on objects of same name
Discussion
16.

What is the meaning of overloading?

A. To use single function many times
B. To use same object for different subprograms
C. To use same name for different objects
D. To use single function many time with single call
Answer» D. To use single function many time with single call
Discussion