BCA Examination 2022 Logical Organization of Computer PDF

## B.C.A. EXAMINATION, 2022 ### (First Semester) ### LOGICAL ORGANIZATION OF COMPUTER-I **Code : BCA-104** **Time: 3 Hours** **Maximum Marks: 80** Before answering the question-paper candidates should ensure that they have been supplied to correct and complete question-paper. No complaint, in this...

## B.C.A. EXAMINATION, 2022 ### (First Semester) ### LOGICAL ORGANIZATION OF COMPUTER-I **Code : BCA-104** **Time: 3 Hours** **Maximum Marks: 80** Before answering the question-paper candidates should ensure that they have been supplied to correct and complete question-paper. No complaint, in this regard, will be entertained after the examination. **Note:** Attempt any Five questions. All questions carry equal marks. ### Unit I 1. (a) Describe Truth Table. ### Unit II 2. (a) What are parity bits ? How are these relevant in error detection and correction code ? Explain with example. (b) Explain Floating point representation of number and character codes. 3. (a) Explain the BCD code in detail. Also explain why these codes are used. (b) Explain error detection and correction codes. ### Unit III 4. (a) Simplify the following Boolean expression using K-Map: $F(a, b, c) = ∑(1, 4, 5, 6, 7)$ and realize the same using NAND gates. (b) What do you mean by canonical and standard form of Boolean function ? Explain. 5. Explain the following: (a) SOPs and POSs (b) Venn Diagram and Boolean Algebra. ### Unit IV 6. (a) What are AND-OR-INVERT and OR-AND-INVERT implementation? Explain. (b) What is combinational circuit ? What are its characteristics ? Detail out the procedure for design of combinational circuit. ### Unit V 7. Explain the following: (a) Design a combinational circuit that receives 2-bit binary input and produce its square at the output. (b) What is Universal Gate ? Why are these named so ? Justify. 8. (a) What is a multiplexer ? How does it work? What are its applications ? Explain. (b) What is Half adder and Full adder ? Design a full adder and implement the same using gates. 9. (a) What is the principle of encoder and decoder? How is an encoder different from a decoder ? (b) What are Comparators ? Where are comparators used ? Describe its types.