Q1. The format used to present the logic output for the various combinations of logic inputs to a gate is called a(n):.
A. truth table..
B. input logic function..
C. Boolean constant..
D. Boolean variable..
Answer= truth table.
Q2. What is the basic difference between AHDL and VHDL?.
A. ADHL is used in all PLD's..
B. VHDL is used in all PLD's..
C. ADHL is proprietary..
D. VHDL is proprietary..
Answer= ADHL is proprietary.
Q3. A small circle on the output of a logic gate is used to represent the:.
A. Comparator operation..
B. OR operation..
C. NOT operation..
D. AND operation..
Answer= NOT operation.
Q4. In VHDL, the mode of a port does not define:.
A. an input..
B. an output..
C. both an input and an output..
D. the TYPE of the bit..
Answer= the TYPE of the bit.
Q5. Which of the following equations would accurately describe a 4-input OR gate when A = 1, B = 1, C = 0, and D = 0?.
A. 1 + 1 + 0 + 0 = 1.
B. 1 + 1 + 0 + 0 = 01.
C. 1 + 1 + 0 + 0 = 0.
D. 1 + 1 + 0 + 0 = 00.
Answer= 1 + 1 + 0 + 0 = 1
Q6. How are the statements between BEGIN and END not evaluated in VHDL?.
A. Constantly.
B. Simultaneously.
C. Concurrently.
D. SeQntially.
Answer= SeQntially
Q7. A NOR gate with one HIGH input and one LOW input:.
A. will output a HIGH.
B. functions as an AND.
C. will not function.
D. will output a LOW.
Answer= will output a LOW
Q8. A NAND gate has:.
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..
Answer= active-HIGH inputs and an active-LOW output.
Q9. The logic gate that will have HIGH or "1" at its output when any one of its inputs is HIGH is a(n):.
A. NOR gate.
B. OR gate.
C. AND gate.
D. NOT operation.
Answer= OR gate
Q10. An OR gate with inverted inputs functions as:.
A. an AND gate..
B. a NAND gate..
C. a NOR gate..
D. an inverter..
Answer= a NAND gate.
Q11. The special software application that translates from HDL into a grid of 1's and 0's, which can be loaded into a PLD, is called a:.
A. formatter..
B. compiler..
C. programmable wiring..
D. CPU..
Answer= compiler.