You can download Previous year question papers of DIGITAL ELECTRONICS (D.E) for BCA 2014. Uttarakhand Technical University (UTU) Conducted Examination of the Professional Courses. Here we provide a previous year question papers for BCA Second semester subject is DIGITAL ELECTRONICS (D.E). Check out all question papers, Exam pattern, Syllabus, results.
Last Year Paper of DEGITAL ELECTRONICS for BCA 2014
BCA
UTU EXAMINATION SECOND SEMESTER -2014
DIGITAL ELECTRONICS
Time Duration: 3 Hrs. Total Marks: 70
Instruction: Attempt any Five Questions? All questions carry equal marks.
1 (a) What is computer? Explain the characteristic of a computer.
(b) Draw the basic diagram of computer organization and explain its components in details.
2 (a) What is the meant by the base of a number system? Give examples to Illustrate the role of base in positional number system.
(b) Convert the following numbers to decimal:
(i) (2A3B)16 (ii) (1234)9
3 (a) Explain the error detection and correction codes with Illustrative examples.
(b) State and prove the two basic De Morgan’s theorems.
4 (a) What do you understand by logic gates? Discuss the various types of gates. Why the NAND gate is called digital building block?
5 (a) Show that a full-subtractor can be constructed with two half-subtractors and an OR gate.
(b) What is register organization? Also explain general purpose registers.
6 (a) What is the difference between static RAM and dynamic RAM? Explain the term ROM. Also write the types of ROM.
(b) Explain the concept of virtual memory in details.
7 (a) Explain the term Direct Memory Access (DMA), giving a typical DMA block diagram.
(b) Describe the interrupt driven I/O. Give the drawbacks of Programmed and interrupt driven I/O.
8 Write shorts on the following:
- CPU organization.
- Multiplexer
- Magnetic tape
- Priority interrupt
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