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Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Tech.(ECE)/(ETE) (2011 Onwards)
B.Tech.(Automation & Robotics) (2011 & Onwards)
B.Tech.(Electronics Engg.) (2012 Onwards)
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(Sem.=-5)
MICROPROCESSORS & MICROCONTROLLERS
Subject Code : BTEC-504
M.Code : 70480
Time : 3 Hrs. Max. Marks : 60
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INSTRUCTION TO CANDIDATES :
- SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
- SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
- SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.
SECTION-A
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- Answer briefly :
- What is the function of RST and ALE signals?
- What do you understand by Embedded Systems?
- Enlist some salient features of 8085.
- List the different flags of 8085 microprocessor.
- How many ways an 8051 can be interrupted?
- Discuss the difference between ADD and ADDC instruction.
- If the frequency of the crystal connected to 8085 is 6MHz, calculate the time to fetch and execute NOP instruction.
- What is the significance of SWAP instruction?
- What is the use of SMOD bit in 8051?
- What is the use of DPTR?
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SECTION-B
- Differentiate between memory mapped I/O and peripheral mapped I/O in case of 8085 Microprocessor.
- Draw and explain the timing diagram of memory read cycle.
- A switch is connected to pin P1.0 and LED to pin P2.7. Write a program to get the status of the switch and send it to the LED. At the same time, generate a waveform of 100 microsecond at pin p3.2.
- Write a program to generate a square wave of 2 KHz frequency at pin 2.3 of 8051 microcontroller.
- Discuss the various registers of 8051 microcontroller.
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SECTION-C
- What is the function of SBUF register? Discuss the various steps to transfer data serially.
- Classify and explain different types of 8085 instructions with examples.
- Show the connections for Interfacing of DAC with 8051 and write a program to demonstrate its working.
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NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.
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This download link is referred from the post: PTU B.Tech Dec 2018 5th Semester Question Papers || Punjab Technical University