Tribhuvan University
Bachelor of Information Technology
Semester 1 · TU Board 2077
Course Title: Digital Logics (BIT103)
Full Marks: 60Pass Marks: 24Time: 3 hours
Candidates are required to give their answers in their own words as far as practicable.
Group A
Attempt any Two questions.(2 × 10 = 20)
- 2.10
Define combinational logic circuit. Design a combinational circuit whose input is a four-bit number and output is 2's complement of the input number.
Answer comingAlso asked in 2080
- 3.10
What is ring counter? Explain ring counter with diagram, timing sequence and timing diagram.
Group B
Attempt any Eight questions(8 × 5 = 40)
- 4.5
Convert (1011 110) into decimal and hexadecimal.
Answer comingAlso asked in 2078
- 5.5
Substract (1001.11 - 1010.10) using 2's and 1's complement.
- 6.5
Express the given function in sum of minterms. F = y'z + wxy' + wzx' + w'x'z'
- 7.5
Simplify the Boolean function using don't care conditions d, In sum of products and product of sums form. F(A, B, C, D) = π(1,3,7,8,12) and πd(5,10,13,14)
- 8.5
Implement a full subtracter with two half subtractors and one OR Gate.
- 9.5
Define SR latch with logic diagram and truth table.
Answer comingAlso asked in 2079, 2078
- 10.5
Compare the logic of synchronous counter and ripple counter.
- 11.5
Define shift register with its types.
- 12.5
Write short notes on: a) Parity generator b) State diagram
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