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Digital Systems
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Course Name
BCA (Bachelor of Computer Application)
Subject Code BC0036 (Digital Systems)
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PART - A
PART - B
PART - C
Subject : Digital Systems
BC0036 : PART - A
| Q. 1 | convert the 101.11(2) to decimal |
| | A) | 5.75 |
| B) | 5.65 | | C) | 5.55 | | D) | None | | | | | Q. 2 | The basic gates are |
| | A) | AND,OR,NAND |
| B) | AND,OR,NOT | | C) | NAND, NOR | | D) | AND,NOR,NAND | | | | | Q. 3 | The decimal equivalent of an octal number 234.32 is |
| | A) | 156.15625 |
| B) | 156.15265 | | C) | 156.2562 | | D) | 156.1554 | | | | | Q. 4 | Represent the 1011001.1011(2) to octal |
| | A) | 132.54 |
| B) | 132.55 | | C) | 131.54 | | D) | 132.45 | | | | | Q. 5 | The method used to simplify the logic expression in case of more number of entries is |
| | A) | Karnaugh map c |
| B) | K-map | | C) | Quine Mcclusky | | D) | Both a and c | | | | | Q. 6 | The difference between a half-adder and full-adder is |
| | A) | The half adder is having a carry input |
| B) | The full adder is not having a carry input | | C) | The half addel~ does not have a carry input | | D) | None | | | | | Q. 7 | In K-map grouping can be done only for |
| | A) | two,four,eight and sixteen |
| B) | two and eight | | C) | four,eight and sixteen | | D) | only two | | | | | Q. 8 | The 2's complement of 10001 is |
| | A) | Ollll |
| B) | Ol0l0 | | C) | Olll0 | | D) | Olll0 | | | | | Q. 9 | Select all the true statements
l. An Inverter changes a Low level to a High level analogviceversa
2. An OR gate produces a High output if and only if all the inputs are High
3. An AND gate produces a High output if and only if all of its inp |
| | A) | 1,2,3,4 |
| B) | 1,3,4 | | C) | 1,2,4 | | D) | 2,3,4 | | | | | Q. 10 | Simplify (a+b)+c by using Demorgan's Theorem |
| | A) | (a+b)c |
| B) | (a+b)+c | | C) | (a+b+c) | | D) | None | | | |
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