Discussion
Home ‣ Digital Electronics ‣ Combinational Logic Circuits Comments
- Question
After each circuit in a subsection of a VHDL program has been ________, they can be combined and the subsection can be tested.
Options- A. designed
- B. tested
- C. engineered
- D. produced
- Correct Answer
- tested
- 1. The addition of two signed numbers in the 2's complement system can cause overflow. For overflow to occur both numbers must ________.
Options- A. be positive
- B. be negative
- C. have the same sign
- D. have opposite signs Discuss
- 2. The ________ circuit produces a HIGH output whenever the two inputs are equal.
Options- A. exclusive-AND
- B. exclusive-NAND
- C. exclusive-NOR
- D. exclusive-OR Discuss
- 3. ________ is a correct combination for an ODD-parity data transmission system.
Options- A. data = 1101 1011
parity = 1 - B. data = 1101 0010
parity = 0 - C. data = 0001 0101
parity = 1 - D. data = 1010 1111
parity = 0
Discuss
- 4. VHDL is very strict in the way it allows us to assign and compare ________ such as signals, variables, constants, and literals.
Options- A. objects
- B. LOGIC_VECTORS
- C. designs
- D. arrays Discuss
- 5. When an open occurs on the input of a CMOS gate, the output will ________.
Options- A. go LOW, because there is no current in an open circuit
- B. react as if the open input were a HIGH
- C. go HIGH, since full voltage appears across an open
- D. be unpredictable; it may go HIGH or LOW Discuss
- 6. Except for ________, STD_LOGIC may have the following values.
Options- A. 'z'
- B. 'U'
- C. '?'
- D. 'L' Discuss
- 7. Parity generation and checking is used to detect ________.
Options- A. which of two numbers is greater
- B. errors in binary data transmission
- C. errors in arithmetic in computers
- D. when a binary counter counts incorrectly Discuss
- 8. The Boolean equation for the exclusive-OR function is ________.
Options- A.
- B.
- C.
- D.
Discuss
- 9. Connecting components together using HDL is not difficult.
Options- A. True
- B. False Discuss
- 10. VHDL was created as a very flexible language and it allows us to define the operation of clocked devices in the code without relying on logic primitives.
Options- A. True
- B. False Discuss
Combinational Logic Circuits problems
Search Results
Correct Answer: have the same sign
Correct Answer: exclusive-NOR
Correct Answer: data = 1101 1011
parity = 1
Correct Answer: objects
Correct Answer: be unpredictable; it may go HIGH or LOW
Correct Answer: '?'
Correct Answer: errors in binary data transmission
Correct Answer:
Correct Answer: True
Correct Answer: True
Comments
There are no comments.More in Digital Electronics:
Programming
Copyright ©CuriousTab. All rights reserved.