BCA-104: Logical Organization of Computer

BCA Examination 2022 - Logical Organization of Computer

• Exam: First Semester, BCA-104
• Time: 3 hours
• Marks: 80
• Instructions: Attempt 5 questions, equal marks for each
• Note: Candidates must ensure correct and complete question paper is supplied, complaints will not be entertained after the examination.

Unit I

• Question 1(a): Describe Truth Table.
• Question 1(b): Explain Multilevel NAND circuit.
• Question 1(c): Write a short note on Parallel Binary Adder.
• Question 1(d): What is Digital Signal?
• Question 1(e): Explain Karnaugh Maps.
• Question 1(f): Describe Standard SOP form of Boolean function.
• Question 1(g): What is Unicode? Describe it.
• Question 1(h): Describe Full Adder.

Unit II

• Question 2(a): What are parity bits? How are they relevant in error detection and correction code? Explain with example.
• Question 2(b): Explain Floating point representation of number and character codes.
• Question 3(a): Explain the BCD code in detail. Also, explain why these codes are used.
• Question 3(b): Explain error detection and correction codes.

Unit III

• Question 4(a): Simplify the Boolean expression F(a, b, c) = Σ(1, 4, 5, 6, 7) using K-Map and realize the same using NAND gates.
• Question 4(b): Explain canonical and standard form of Boolean function.
• Question 5(a): Explain SOPs and POSs.
• Question 5(b): Describe Venn Diagram and Boolean Algebra.

Unit IV

• Question 6(a): Explain AND-OR-INVERT and OR-AND-INVERT implementation.
• Question 6(b): What is combinational circuit? Describe its characteristics and procedure for design.

Unit V

• Question 7(a): Design a combinational circuit that receives 2-bit binary input and produces its square at the output.
• Question 7(b): What is a Universal Gate? Why are these named so? Justify.
• Question 8(a): What is a multiplexer? How does it work? What are its applications? Explain.
• Question 8(b): What is Half Adder and Full Adder? Design a full adder and implement the same using gates.
• Question 9(a): Explain the principle of encoder and decoder; how are they different?
• Question 9(b): What are comparators? Where are they used? Describe the types.

This quiz covers essential topics from the first semester BCA-104 course on Logical Organization of Computer. Students will explore concepts such as truth tables, NAND circuits, and Boolean functions. Prepare to tackle questions on digital signals and error detection methods.