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Describing Logic Circuits (Digital Electronics) Question and Answers-Page first

# Describing Logic Circuits problems

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• 1. Which step in this reduction process is using DeMorgan's theorem? • Options
• A. STEP 1
• B. STEP 2
• C. STEP 3
• D. STEP 4

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• 2. Which of the figures given below represents an OR gate? • Options
• A. a
• B. b
• C. c
• D. d

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• 3. A NOR gate with one HIGH input and one LOW input:

• Options
• A. will output a HIGH
• B. functions as an AND
• C. will not function
• D. will output a LOW

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• 4. What is the basic difference between AHDL and VHDL?

• Options
• A. ADHL is used in all PLD's.
• B. VHDL is used in all PLD's.
• D. VHDL is proprietary.

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• 5. The Boolean equation for a NOR function is:

• Options
• A. • B. • C. • D. •

• 6. How are the statements between BEGIN and END not evaluated in VHDL?

• Options
• A. Constantly
• B. Simultaneously
• C. Concurrently
• D. Sequentially

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• 7. A NAND gate has:

• Options
• A. active-LOW inputs and an active-HIGH output.
• B. active-LOW inputs and an active-LOW output.
• C. active-HIGH inputs and an active-HIGH output.
• D. active-HIGH inputs and an active-LOW output.

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• 8. The format used to present the logic output for the various combinations of logic inputs to a gate is called a(n):

• Options
• A. truth table.
• B. input logic function.
• C. Boolean constant.
• D. Boolean variable.

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• 9. Which of the figures in figure (a to d) is equivalent to figure (e)? • Options
• A. a
• B. b
• C. c
• D. d

• Tags: Bank Exams

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• 10. Which of the following equations would accurately describe a 4-input OR gate when A = 1, B = 1, C = 0, and D = 0?

• Options
• A. 1 + 1 + 0 + 0 = 1
• B. 1 + 1 + 0 + 0 = 01
• C. 1 + 1 + 0 + 0 = 0
• D. 1 + 1 + 0 + 0 = 00

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