2025 question paper
MICROPROCESSORS
29 questions
Q1a. Which of the following is the brain of a microcomputer system? (i) RAM (ii) Microprocessor (iii) ROM (iv) ALU20252m
Module 1: Fundamentals of Microprocessors
View this question on its own page →Which of the following is the brain of a microcomputer system?
(i) RAM
(ii) Microprocessor
(iii) ROM
(iv) ALUQ1b. Which company developed the 8051 microcontroller? (i) Intel (ii) AMD (iii) IBM (iv) Motorola20252m
Module 2: The 8051 Architecture
View this question on its own page →Which company developed the 8051 microcontroller?
(i) Intel
(ii) AMD
(iii) IBM
(iv) MotorolaQ1c. The Stack Pointer points to (i) Program memory (ii) Top of stack (iii) Data memory (iv) I/O port20252m
Module 2: The 8051 Architecture
View this question on its own page →The Stack Pointer points to
(i) Program memory
(ii) Top of stack
(iii) Data memory
(iv) I/O portQ1d. Which port has dual functionality in 8051? (i) Port 0 (ii) Port 2 (iii) Port 1 (iv) Port 320252m
Module 2: The 8051 Architecture
View this question on its own page →Which port has dual functionality in 8051?
(i) Port 0
(ii) Port 2
(iii) Port 1
(iv) Port 3Q1e. Indexed addressing mode is mainly used for (i) Arrays (ii) Arithmetic (iii) Stack (iv) Logic20252m
Module 3: Instruction Set and Programming
View this question on its own page →Indexed addressing mode is mainly used for
(i) Arrays
(ii) Arithmetic
(iii) Stack
(iv) LogicQ1f. The 8051 has how many I/O ports? (i) 1 (ii) 4 (iii) 2 (iv) 520252m
Module 2: The 8051 Architecture
View this question on its own page →The 8051 has how many I/O ports?
(i) 1
(ii) 4
(iii) 2
(iv) 5Q1g. Which instruction decrements and jumps if not zero? (i) DJNZ (ii) AJMP (iii) CJNE (iv) NOP20252m
Module 3: Instruction Set and Programming
View this question on its own page →Which instruction decrements and jumps if not zero?
(i) DJNZ
(ii) AJMP
(iii) CJNE
(iv) NOPQ1h. I2C uses how many lines? (i) 1 (ii) (iii) 2 (iv) 820252m
Module 5: External Communication Interface
View this question on its own page →I2C uses how many lines?
(i) 1
(ii)
(iii) 2
(iv) 8Q1i. Interfacing a DC motor generally requires (i) Driver circuit (ii) Counter (iii) Keyboard (iv) Crystal oscillator20252m
Module 6: Applications
View this question on its own page →Interfacing a DC motor generally requires
(i) Driver circuit
(ii) Counter
(iii) Keyboard
(iv) Crystal oscillatorQ1j. Which protocol is commonly used for sensor interfacing? (i) I2C (ii) FTP (iii) HTTP (iv) SMTP20252m
Module 5: External Communication Interface
View this question on its own page →Which protocol is commonly used for sensor interfacing?
(i) I2C
(ii) FTP
(iii) HTTP
(iv) SMTPQ2a. Explain the architecture of an 8-bit microprocessor with a neat block diagram.20257m
Module 1: Fundamentals of Microprocessors
View this question on its own page →Explain the architecture of an 8-bit microprocessor with a neat block diagram.
Q2b. Discuss the advantages and disadvantages of embedded systems.20257m
Module 1: Fundamentals of Microprocessors
View this question on its own page →Discuss the advantages and disadvantages of embedded systems.
Q3a. Draw and explain the internal block diagram of the 8051 microcontroller.20257m
Module 2: The 8051 Architecture
View this question on its own page →Draw and explain the internal block diagram of the 8051 microcontroller.
Q3b. Describe the role of Program Counter and timing circuits in 8051.20257m
Module 2: The 8051 Architecture
View this question on its own page →Describe the role of Program Counter and timing circuits in 8051.
Q4a. Explain the Special Function Registers used in 8051.20257m
Module 2: The 8051 Architecture
View this question on its own page →Explain the Special Function Registers used in 8051.
Q4b. Discuss the data transfer and arithmetic instructions of the 8051.20257m
Module 3: Instruction Set and Programming
View this question on its own page →Discuss the data transfer and arithmetic instructions of the 8051.
Q5a. Write a program to find the largest number in an array using 8051 assembly language.20257m
Module 3: Instruction Set and Programming
View this question on its own page →Write a program to find the largest number in an array using 8051 assembly language.
Q5b. Explain Different Addressing Modes of 8051 Microcontroller.20257m
Module 3: Instruction Set and Programming
View this question on its own page →Explain Different Addressing Modes of 8051 Microcontroller.
Q6a. Explain subroutine instructions and stack operations in 8051.20257m
Module 3: Instruction Set and Programming
View this question on its own page →Explain subroutine instructions and stack operations in 8051.
Q6b. Explain memory interfacing techniques in the 8051 microcontroller.20257m
Module 4: Memory and I/O Interfacing
View this question on its own page →Explain memory interfacing techniques in the 8051 microcontroller.
Q7a. Explain the interfacing of ADC with the 8051 microcontroller.20257m
Module 4: Memory and I/O Interfacing
View this question on its own page →Explain the interfacing of ADC with the 8051 microcontroller.
Q7b. Discuss the RS232 communication interface with neat diagrams.20257m
Module 5: External Communication Interface
View this question on its own page →Discuss the RS232 communication interface with neat diagrams.
Q8a. Explain the interfacing of wireless communication protocols in embedded systems.20257m
Module 5: External Communication Interface
View this question on its own page →Explain the interfacing of wireless communication protocols in embedded systems.
Q8b. Discuss LCD interfacing with neat diagrams.20257m
Module 4: Memory and I/O Interfacing
View this question on its own page →Discuss LCD interfacing with neat diagrams.
Q9a. Compare microprocessor and microcontroller with suitable examples.20253.5m
Module 1: Fundamentals of Microprocessors
View this question on its own page →Compare microprocessor and microcontroller with suitable examples.
Q9b. Explain the address bus, data bus, and control bus in the 8051 architecture.20253.5m
Module 2: The 8051 Architecture
View this question on its own page →Explain the address bus, data bus, and control bus in the 8051 architecture.
Q9c. Explain the concept of wait states in memory interfacing.20253.5m
Module 4: Memory and I/O Interfacing
View this question on its own page →Explain the concept of wait states in memory interfacing.
Q9d. Discuss Zigbee protocol and its advantages.20253.5m
Module 5: External Communication Interface
View this question on its own page →Discuss Zigbee protocol and its advantages.
Q9e. Explain the working and applications of stepper motors.20253.5m
Module 6: Applications
View this question on its own page →Explain the working and applications of stepper motors.