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Posted Date: 09 Oct 2008 Posted By: Karthika M Member Level: Gold
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2008 Alagappa University M.C.A Computer Aplications DIGITAL COMPUTER ORGANIZATION Question paper
DISTANCE EDUCATION
M.C.A. (Non-Semester) DEGREE EXAMINATION, MAY 2008.
First Year
DIGITAL COMPUTER ORGANIZATION
(2001 onwards)
Time : Three hours Maximum : 100 marks
Answer any FIVE questions.
1.(a)Explain the various complement systems in binary numbers.
(b)Discuss about gray code and BCD code.
2.(a)Explain multiplexer with suitable diagram.
(b)Describe half adder with neat diagram.
3.(a)Explain the working principle of JK flip-flop.
(b)Describe the working of BCD counter.
4.(a)Explain the shift registers.
(b)Write detail note on Half subtractor.
5.(a)Simplify the following Boolean function in sum of product form by means of 4 variable map. Draw the logic diagram with NAND gates (0, 2, 8, 9, 10, 11, 14, 15)
(b)Write about encoder.
6.(a)Explain the design of accumulator logic with control of AC registers, adder and logic unit.
(b)Describe the need for secondary storage devices.
7.(a)Explain various interrupts and their priorities in micro processors.
(b)Describe the different types of RAM.
8.(a)What is I/O interface? Why we need I/O interface? Explain with an example.(10)
(b)Explain the DMA transfer with the necessary diagrams. (10)
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