CS302 Midterm Solved Paper Set 2

MIDTERM EXAMINATION

Fall 2009

CS302- Digital Logic Design (Session - 5) Ref No: 1022709 Time: 60 min Marks: 38

Q1. According to Demorgan’s theorem: (1 marks)

1. A.B.C

Q2. The Extended ASCII Code (American Standard Code for Information Interchange) is a _____ code (1 marks)

1. 2-bit
2. 7-bit
3. 8-bit
4. 16-bit

Q3. The AND Gate performs a logical __________function (1 marks)

1. Addition
2. Subtraction
3. Multiplication
4. Division

Q4. NOR gate is formed by connecting _________ (1 marks)

1. OR Gate and then NOT Gate
2. NOT Gate and then OR Gate
3. AND Gate and then OR Gate
4. OR Gate and then AND Gate

Correct answer: OR Gate and then NOT Gate

Q5. Generally, the Power dissipation of _______ devices remains constant throughout their operation. (1 marks)

1. TTL
2. CMOS 3.5 series
3. CMOS 5 Series
4. Power dissipation of all circuits increases with time.

Correct answer: TTL

Q6. Two 2-bit comparator circuits can be connected to form single 4-bit comparator (1 marks)

1. True
2. False

Correct answer: True

Q7. When the control line in tri-state buffer is high the buffer operates like a ________ gate (1 marks)

1. AND
2. OR
3. NOT
4. XOR

Correct answer: XOR

Q8. The GAL22V10 has ____ inputs (1 marks)

1. 22
2. 10
3. 44
4. 20

Correct answer: 10