Download SGBAU BCA 2019 Summer 3rd Sem Electronics Question Paper

Download SGBAU (Sant Gadge Baba Amravati university) BCA 2019 Summer (Bachelor of Computer Applications) 3rd Sem Electronics Previous Question Paper

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B.C.A. (Part--Il) Scmcster?III Examination
BS'I?S : ELECTRONICS
Time : Three Hours] [Maximum Marks : 60
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NB. :? (1) All questions are compulsory.
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(2) All questions carry equal marks.
Draw block diagram of microcomputer system and explain the functions of each block.
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Explain instruction format of 8085 microprocessor. 6
0R
Draw and explain timing diagram ofmcmory read bus cycle. 6
What is Flag ? Explain the functions ol'diftbrcnt ?ags of 8085 microprocessor with suitable
diagram. 6
Write an ALP using 8085 mp for multiplication oftwo 8 bit numbers and draw flow chart.
6
Explain stack and stack pointer with suitable example. 6
OR
Give the classi?cation of instruction set and explain the arithmetic group of instmction with
suitable example. 6
What is addressing mode ?? List the addressing modes of 8085. Explain any two modes with
suitable example. 6
Explain synchronous and asynchronous data transfer scheme. 6
Explain control word format in 1/0 and BSR mode of 8255 PM with suitable diagram.
6
0R
Differentiate between memory mapped 1/0 and 1/0 mapped I/O scheme. 6
Draw the block diagram of 8255 PM and explain the function 01' each block. 6
Explain the status ?ag of 8086 microprocessor. 6
Explain the following :
(i) Poin er register
(ii)? Index register
(iii) Segment register. 6
0R
Draw and explain pin diagram of 8086 microprocessor. 6
Explain operating modes 01'8086 microprocessor. 6
Explain various addressing modes of 8086 microprocessor with suitable example. 6
Write ALP for subtraction oftwo 8-bit numbers and draw ?ow chart. 6
0R
Write ALP using 8086 mp for multiplication of two numbers and draw ?ow chart. 6
Explain the following instmctions :
(i) MOV
(ii) LDS
(iii) POP 6
YBC? 15368 225