2024 question paper
MICROPROCESSORS
25 questions
Q1a. The Program Counter (PC) in 8051 is how many bits? (i) 8-bit (ii) 16-bit (iii) 12-bit (iv) 32-bit20242m
Module 2: The 8051 Architecture
View this question on its own page →The Program Counter (PC) in 8051 is how many bits?
(i) 8-bit
(ii) 16-bit
(iii) 12-bit
(iv) 32-bitQ1b. In 8051, which register is used to enable or disable interrupts? (i) IE (ii) IP (iii) TCON (iv) PCON20242m
Module 2: The 8051 Architecture
View this question on its own page →In 8051, which register is used to enable or disable interrupts?
(i) IE
(ii) IP
(iii) TCON
(iv) PCONQ1c. Which of the following microcontrollers is based on the Harvard architecture? (i) Intel 8085 (ii) Intel 8086 (iii) Intel 8051 (iv) ARM Cortex20242m
Module 1: Fundamentals of Microprocessors
View this question on its own page →Which of the following microcontrollers is based on the Harvard architecture?
(i) Intel 8085
(ii) Intel 8086
(iii) Intel 8051
(iv) ARM CortexQ1d. The default start value of Stack Pointer after reset in 8051 is: (i) 00H (ii) 10H (iii) FFH (iv) 07H20242m
Module 2: The 8051 Architecture
View this question on its own page →The default start value of Stack Pointer after reset in 8051 is:
(i) 00H
(ii) 10H
(iii) FFH
(iv) 07HQ1e. Which type of memory in 8051 is bit-addressable? (i) Entire RAM (ii) Register bank (iii) 16 bytes of internal RAM from 20H to 2FH (iv) Entire ROM20242m
Module 2: The 8051 Architecture
View this question on its own page →Which type of memory in 8051 is bit-addressable?
(i) Entire RAM
(ii) Register bank
(iii) 16 bytes of internal RAM from 20H to 2FH
(iv) Entire ROMQ1f. A timing diagram shows: (i) Logical output of program (ii) Voltage transitions with respect to time (iii) Machine code of instruction (iv) Bus architecture20242m
Module 2: The 8051 Architecture
View this question on its own page →A timing diagram shows:
(i) Logical output of program
(ii) Voltage transitions with respect to time
(iii) Machine code of instruction
(iv) Bus architectureQ1g. What is the function of ALE signal in 8051? (i) Latches lower address byte (ii) Enables timers (iii) Selects internal memory (iv) Controls interrupt20242m
Module 2: The 8051 Architecture
View this question on its own page →What is the function of ALE signal in 8051?
(i) Latches lower address byte
(ii) Enables timers
(iii) Selects internal memory
(iv) Controls interruptQ1h. Which pin of RS232 connector is used for Transmit Data (TXD)? (i) Pin 2 (ii) Pin 1 (iii) Pin 4 (iv) Pin 320242m
Module 5: External Communication Interface
View this question on its own page →Which pin of RS232 connector is used for Transmit Data (TXD)?
(i) Pin 2
(ii) Pin 1
(iii) Pin 4
(iv) Pin 3Q1i. How many lines are used in the basic SPI communication? (i) 5 (ii) 2 (iii) 4 (iv) 320242m
Module 5: External Communication Interface
View this question on its own page →How many lines are used in the basic SPI communication?
(i) 5
(ii) 2
(iii) 4
(iv) 3Q1j. Which protocol supports multi-master configuration? (i) UART (ii) I2C (iii) RS232 (iv) SPI20242m
Module 5: External Communication Interface
View this question on its own page →Which protocol supports multi-master configuration?
(i) UART
(ii) I2C
(iii) RS232
(iv) SPIQ2a. Demonstrate the Special Function Registers in 8051.20247m
Module 2: The 8051 Architecture
View this question on its own page →Demonstrate the Special Function Registers in 8051.
Q2b. Explain the functions and programming associated to Interrupt Controller block in 8051.20247m
Module 2: The 8051 Architecture
View this question on its own page →Explain the functions and programming associated to Interrupt Controller block in 8051.
Q3a. Discuss the Functions associated to all I/O Port pins in 8051.20247m
Module 2: The 8051 Architecture
View this question on its own page →Discuss the Functions associated to all I/O Port pins in 8051.
Q3b. Demonstrate interfacing of a 4x4 (16-key) keyboard with 8051, with neat circuit diagram and display using 8051 Microcontroller.20247m
Module 6: Applications
View this question on its own page →Demonstrate interfacing of a 4x4 (16-key) keyboard with 8051, with neat circuit diagram and display using 8051 Microcontroller.
Q4a. Explain the oscillator circuit and timing of the 8051 microcontrollers.20247m
Module 2: The 8051 Architecture
View this question on its own page →Explain the oscillator circuit and timing of the 8051 microcontrollers.
Q5. Illustrate the pin diagram of 8051 with the help of a suitable diagram and explain the utility of the pins available in 8051.202414m
Module 2: The 8051 Architecture
View this question on its own page →Illustrate the pin diagram of 8051 with the help of a suitable diagram and explain the utility of the pins available in 8051.
Q6a. What is a Timer circuit? Explain the Timer operations associated to 8051 microcontrollers by using Timer Registers.20247m
Module 4: Memory and I/O Interfacing
View this question on its own page →What is a Timer circuit? Explain the Timer operations associated to 8051 microcontrollers by using Timer Registers.
Q6b. Explain the internal memory organization of the microcontroller 8051.20247m
Module 2: The 8051 Architecture
View this question on its own page →Explain the internal memory organization of the microcontroller 8051.
Q7a. Explain different types of buses used in 8-bit microprocessor.20247m
Module 1: Fundamentals of Microprocessors
View this question on its own page →Explain different types of buses used in 8-bit microprocessor.
Q7b. Define subroutine. Explain the execution of subroutine function.20247m
Module 3: Instruction Set and Programming
View this question on its own page →Define subroutine. Explain the execution of subroutine function.
Q8. With the help of schematic diagram, explain the interfacing of stepper motor with 8051 Microcontroller. Also, write ALP to change the speed and direction of motor.202414m
Module 6: Applications
View this question on its own page →With the help of schematic diagram, explain the interfacing of stepper motor with 8051 Microcontroller. Also, write ALP to change the speed and direction of motor.
Q9a. Write short notes on: Overview of 8051 family20247m
Module 1: Fundamentals of Microprocessors
View this question on its own page →Write short notes on: Overview of 8051 family
Q9b. Write short notes on: Stack & Stack Pointer20247m
Module 2: The 8051 Architecture
View this question on its own page →Write short notes on: Stack & Stack Pointer
Q9c. Write short notes on: Register IE format of 805120247m
Module 2: The 8051 Architecture
View this question on its own page →Write short notes on: Register IE format of 8051
Q9d. Write short notes on: Various addressing modes of 8051 microcontroller20247m
Module 3: Instruction Set and Programming
View this question on its own page →Write short notes on: Various addressing modes of 8051 microcontroller