B.TechSemester 52021-22Microprocessors And MicrocontrollersKEC-502
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Microprocessors And Microcontrollers (KEC-502) - AKTU Question Paper 2021-22

B.Tech · Semester 5 · Free PDF Download

This is the official AKTU Microprocessors And Microcontrollers Previous Year Question Paper for B.Tech Semester 5, academic session 2021-22. Published by Dr. A.P.J. Abdul Kalam Technical University (AKTU/UPTU), Lucknow. Free PDF download — no login required.

Course:B.Tech
Semester:Semester 5
Session:2021-22
University:AKTU / UPTU

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Questions Asked in 2021-22

Microprocessors And Microcontrollers (KEC-502) — extracted question text

Section AAttempt all q u e s t i o n s i n b r i e f . 2 x 10 = 20
  • a
    Discuss the specifications of 8085 microprocessor
  • b
    List the disadvantages of memory mapped I/O
  • c
    State the number of T-states required for following instructio ns: MVI A,34H , LXI H 2000 H
  • d
    List all the maskable and non- maskable interrupts of 8085
  • e
    Explain the physical address, offset address and segment addre ss in context to
  • f
    Discuss the various memory segments in 8086
  • g
    Explain the organization of stack in 8051
  • h
    Describe the bit-addressabl e RAM space available in 8051. i. Discuss the significance of fo llowing SFR’s of 8051- PSW, TCON j. Describe the following instructions of 8051- (i)MOV A, @R0 (i i) MOVX A, @DPTR
Section BAttempt any three o f t h e f o l l o w i n g : 10 x 3 = 30
  • a
    Discuss the significance of following signals of 8085 in detai l: HOLD, READY, ALE, HLDA, and CLK OUT
  • b
    Explain the execution of instructions: LXI H 2000H, LDA 2000 H , RAL, JNC, MVI. State the memory occupied by these instructions
  • c
    Explain the CWR of 8255 Programma ble Peripheral Interface and also discuss the BSR mode
  • d
    Analyze the PSW of 8051 and also e xplain the relevant flag bits. Discuss the significance of I/O ports along-with their dual roles in 8051
Section CAttempt any one p a r t o f t h e f o l l o w i n g : 10 x 1 = 10
  • a
    Interface EPROM of 16 K using 8K X 8 chips and a RAM of 8K using 4K X 8 chips to the system lines of 8085 using a 3X8 decoder
  • b
    Demonstrate the interfacing of output and input devices wit h 8085 along-with a suitable diagram. Also explain the relevant instructions used
  • a
    Write an assembly language program to find the largest numb er in a series of number stored from location 2000 H to 200A H. Store the result at location 3000 H. Explain the program with a relevant flowchart
  • b
    Discuss the priorities of th e interrupts available in 8085. Give a detailed explanation of SIM and RIM
  • a
    Discuss the various addre ssing modes available in 8086 along-with examples
  • b
    Demonstrate the architecture of 8253/54 Programmable Timer and discuss the control word register
  • a
    Analyze the architecture of 8051 microcontroller along-with a suitable block diagram
  • b
    Illustrate the addressing m odes of 8051 microcontroller. Su pport your answer with suitable examples
  • a
    Discuss the interrupts of 8051. Also give a detailed descri ption of IE and IP registers
  • b
    Analyze the process of serial communication in 8051 and als o discuss the relevant Special Function Registers (SFR’s) used in serial communication

Question text is extracted from the official AKTU question paper PDF above. Check the original PDF for equations, diagrams and complete wording. Extracted: 2026-08-23.

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