GTU BE/B.Tech 2019 Winter Question Papers || Gujarat Technological University
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GUJARAT TECHNOLOGICAL UNIVERSITY
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BE - SEMESTER- V (New) EXAMINATION - WINTER 2019
Subject Code: 2150306
Subject Name: Microcontroller & Interfacing (Biomedical)
Time: 10:30 AM TO 01:00 PM
Instructions:
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- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
| Q. | Question | Marks |
|---|---|---|
| Q.1 (a) | Draw the Pin Diagram of 8051. | 03 |
| (b) | Compare Microporcessor and Microcontroller. | 04 |
| (c) | Draw the Programming model of 8051 and explain in detail. | 07 |
| OR | ||
| (a) | Write a program to copy the value 65H into RAM memory locations 20H to 21H using register indirect addressing mode. | 03 |
| (b) | Explain Immediate and Register addressing mode with examples. | 04 |
| (c) | Explain IP and IE register in detail. | 07 |
| Q.2 (a) | Enlist various data types of ‘C’ Programming in 8051. Write an 8051 C program to convert packed BCD 0x78 to ASCII and display the bytes on P1 and P2. | 07 |
| OR | ||
| (a) | Explain PSW Register in detail. | 03 |
| (b) | Write a program to check data stored in RAM location 20h to 24h for Sign. If number is negative store them in RAM location starting from 30h. | 04 |
| (c) | Write program to arrange data in ascending order. Assume that data is stored in internal RAM location 40h to 44h. | 07 |
| Q.3 (a) | Explain various CJNE instructions: | 03 |
| OR | ||
| (b) | Write a program to check string stored in memory location 50h to 55h is in palindrome or not. If yes,'store ‘Y’ in memory location 56h else store ‘N’. | 04 |
| (c) | Explain any three assembly language directives. Write a subroutine to convert Packed BCD/data to Hex data. | 07 |
| Q.4 (a) | Explain TMOD Register in detail. | 03 |
| (b) | Write a program to generate delay of 1ms. Assume crystal frequency 12 MHz. | 04 |
| (c) | Write a program in ‘C’ to receive data serially with 9600 baud rate and send it port P1. Assume 8 bit data and 1 stop bit. | 07 |
| OR | ||
| (a) | Explain RS-232 DB9 in detail. | 03 |
| (b) | Write a ‘C’ program to generate square wave with frequency of 1 Hz on pin P2.0. | 04 |
| (c) | Write a program to transmit Y’ serially with 9600 baud rate. Assume 8 bit data and 1 stop bit. | 07 |
| Q.5 (a) | Draw the interfacing circuit to interface DAC 0808. | 04 |
| (b) | Write a program to read status of switch connected with Port 0 and turn ON respective LEDs connected on Port 2. | 07 |
| (c) | Explain how to interface Program ROM and Data ROM with neat circuit. | 03 |
| OR | ||
| (a) | Draw the interfacing circuit to interface 16x2 LCD. | 04 |
| (b) | Explain each pin of RTC DS12887 . | 07 |
| (c) | Interface ADC 0804 and LEDs with Port P1 and P2 of 8051 respectively. Write a program to read data of ADC and display it on LEDs. |
Date: 21/11/2019
Total Marks: 70
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