Important Digital Logic and Design Short Questions
Chapter: 20
Question 1:
How many Odd-Prime numbers can a 4x3 PLA detect?
Answer:
A 4x3 PLA can detect the first six Odd-Prime numbers: 1, 3, 5, 7, 11, and 13.
Chapter: 20
Question 2:
What technology does GAL use instead of fuses?
Answer:
GAL uses E2CMOS logic instead of fuses for reprogramming.
Chapter: 20
Question 3:
How does a GAL connect a column with a row?
Answer:
A GAL connects a column with a row using E2CMOS logic at each column–row intersection.
Chapter: 20
Question 4:
What is the function of an OLMC in a GAL?
Answer:
An OLMC can be programmed for Combinational Logic or Registered Logic in a GAL.
Chapter: 20
Question 5:
How many inputs and outputs does the GAL22V10 have?
Answer:
The GAL22V10 has twelve inputs and ten inputs/outputs.
Chapter: 20
Question 6:
What is the purpose of a tri-state buffer in a GAL?
Answer:
A tri-state buffer controls whether the output is connected or disconnected, showing high impedance when disconnected.
Chapter: 20
Question 7:
How is a PLD programmed?
Answer:
A PLD is programmed using a computer with programming software, which compiles and tests logic before programming the PLD.
Chapter: 20
Question 8:
What does ISP stand for in PLDs?
Answer:
ISP stands for In-System Programming, allowing PLDs to be programmed after installation on a circuit board.
Chapter: 20
Question 9:
What are the three text-based methods in ABEL for describing logic design?
Answer:
The three methods are Boolean Equations, Truth Tables, and State Diagrams.
Chapter: 20
Question 10:
What is the symbol for AND in ABEL?
Answer:
The symbol for AND in ABEL is &.