GTU BE/B.Tech 2018 Winter Question Papers || Gujarat Technological University
Subject Name: Microprocessor and Interfacing
Time: 02:30 PM TO 05:00 PM
Subject Code: 2141001
GUJARAT TECHNOLOGICAL UNIVERSITY
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BE - SEMESTER-IV (NEW) EXAMINATION - WINTER 2018Subject Name: Microprocessor and Interfacing
Time: 02:30 PM TO 05:00 PM
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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| Q.1 | (a) Classify 8085 microprocessor instruction set. | 03 |
| (b) Draw and explain a circuit to generate control signals. | 04 | |
| (c) Draw and explain block diagram of 8085 microprocessor. | 07 | |
| Q.2 | (a) Draw and explain the bus structure of 8085 microprocessor. | 03 |
| (b) Compare Memory mapped I/O and I/O mapped I/O. | 04 | |
| (c) Explain the following instructions of 8085 microprocessor. 1) RRC 2) STC 3) ACI 4) DAD 5) PUSH 6) INX 7) HLT | 07 | |
| OR | ||
| (c) Explain the following instructions of 8085 microprocessor. 1) RAR 2) CMP 3) LHI 4) DAA 5) POP 6) DCR 7) XCHG | 07 | |
| Q.3 | (a) Differentiate: Linear Decoding and Absolute Decoding | 03 |
| (b) Design a delay loop to generate delay of 200msec. Assume clock frequency of 8085 microprocessor is 2MHz. | 04 | |
| (c) List out basic machine cycles of 8085 microprocessor. Draw and explain any two in detail. | 07 | |
| OR | ||
| (c) Explain de-multiplexing of AD0-AD7 lower order address and data bus. | 07 | |
| Q.4 | (a) Write a program to perform multiplication of two 8-bit numbers. | 03 |
| (b) Draw and explain timing diagram of STA instruction. | 04 | |
| (c) Explain SIM and RIM instructions. | 07 | |
| OR | ||
| (c) Explain the concept of stack memory with an example. | 07 | |
| Q.5 | (a) Design an interfacing circuit to interface one 2KB EPROM and two 4KB RAM. | 03 |
| (b) Write a program to arrange given numbers in descending order. | 04 | |
| (c) Broadly classify the interrupts in 8085 microprocessor. | 07 | |
| OR | ||
| (c) Write a program to find negative numbers from the given array of numbers. | 07 | |
| Q.6 | (a) Draw block diagram of 8253 timer IC. | 03 |
| (b) Draw architecture 8086 microprocessor. | 04 | |
| (c) Draw and explain 8259 Programmable Interrupt Controller. | 07 | |
| OR | ||
| (c) Give an overview of Advance microprocessors. | 07 | |
| Q.7 | (a) Explain Addressing modes of 8086 microprocessor. | 03 |
| (b) Draw and explain block diagram and control word of 8255 PPI. | 04 | |
Date: 28/11/2018
Total Marks: 70
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