Microprocessor Previous Question Bank

                            Semester Final Examination: April -2024(Held in October-2024)

1.	a)	Mention the features of 8086 microprocessor.	[3]
	b)	Differentiate between compiler and assembler.	[5]
	c)	RISC stands for Reduced Instruction Set Computer. It is designed to reduce the execution time by simplifying the instruction set of the computer. Show the architecture of a RISC processor.	[6]
2.	a)	Define term- Addressing Mode and Offset Address.	[2]
	b)	Write down some characteristics with example of the following 8086 addressing modes- i. Based, ii. Register Indirect and iii. Immediate.	[2×3]
	c)	Given, CS=1000H, DS=1000H, SS=2000H, ES=4000H, BX=4000H, SI=5000H, DI=6000H, IP=8000H and BP=9000H. Find the memory location from where the 8086 accesses the data while executing the following instructions:     i) MOV BX, [SI-5], ii) MOV CX, DS: [BP+4] and iii) MOV AH, [BX+10H]	[2×3]
3.	a)	Mention at least three applications of Microcontroller in our real life.	[3]
	b)	Differentiate between Microprocessor and Microcontroller.	[5]
	c)	Draw the architecture of 8051 Microcontroller.	[6]
4.	a)	Define term- Vector Interrupt, Non-vector Interrupt, Maskable Interrupt.	[1×3]
	b)	Differentiate between Hardware Interrupt and Software Interrupt in 8086 microprocessors.	[5]
	c)	Explain how Interrupt works in computer step by step.	[6]
5.	a)	Mention at least two advantages of DMA in computer.	[4]
	b)	Draw the block diagram of Microcontroller.	[4]
	c)	Explain how DMA Controller works in computer with appropriate figure.	[6]
6.	a)	Make a short note on the Co-processor.	[3]
	b)	Interface is the path for communication between two components. Show the block diagram of memory and I/O Interfacing with brief description.	[5]
	c)	Consider A=10001011 and B=01000101 are added together in form of C=A+B. find out the value of C and show the status of Carry flag, Auxiliary flag, Parity flag, Zero flag, Sign flag, Overflow flag.	[6]
7.	a)	Define term- i) Mnemonic, ii) Opcode, iii) CISC and iv) Program Counter.	[1×4]
	b)	Make comparison between 8085 and 8086 Microprocessor.	[4]
	c)	Draw the architecture of 8086 Microprocessor and describe the operation of its Bus Interface Unit (BIU) and Execution Unit (EU).	[3+3]

Semester Final Examination: January – 2024

1.	a)	State the following terms- i. Instruction, ii. Mnemonic iii. Extended ASCII, iv. Assembly Language	[1×4]
	b)	Differentiate between compiler and assembler.	[4]
	c)	Mention a 8-bit, a 16-bit, a 32-bit and a 64-bit microprocessor and write some characteristics of them.	[6]
2.	a)	Define sign, carry, parity and zero 8086 FLAG registers.	[4]
	b)	Evaluate the physical address of 8086 microprocessor using offset and segment registers.	[4]
	c)	Write down some characteristics of the following 8086 addressing modes- i. Based    ii. Register Indirect   iii. Based with Displacement	[2×3]
3.	a)	Make a brief note about the Digital Signal Processor.	[4]
	b)	Differentiate between RISC and CISC processor.	[4]
	c)	Build a block diagram of an 8086 microprocessor and describe the operation of its Bus Interface Unit (BIU) and Execution Unit (EU).	[6]
4.	a)	Contrast the terms microprocessor and microcomputer.	[4]
	b)	Explain Interrupt Vector Table of 8086 microprocessor with figure.	[5]
	c)	Indicate some features of indexed, register and based indexed 8086 addressing modes.	[2×3]
5.	a)	Define term: Software and Hardware Interrupt.	[3]
	b)	Write four differences between 8085 and 8086 microprocessors.	[5]
	c)	Given, CS=1000H, DS=2000H, SS=3000H, ES=4000H, BX=5000H, SI=6000H, DI=7000H, IP=8000H and BP=9000H. Find the memory location from where the 8086 accesses the data while executing the following instructions:     i) MOV DX, [BX+SI+6]              ii) MOV AL, [BP+DI+8]	[2×3]
6.	a)	“Microprocessor acts as a CPU”-explain it.	[4]
	b)	Define the following terms- i. Program Counter ii. Source Index iii. Assembler iv. Offset Address	[1×4]
	c)	Briefly explain the components of a microprocessor-based system.	[6]
7.	a)	Point out the roles of code segment and data segment registers.	[3]
	b)	Compare maskable and non-maskable interrupts.	[5]
	c)	Figure out the programming model of 8086 through the Core2 microprocessor including the 64-bit extensions and define RAX, CX, RDX and RBP registers.	[6]

3^rd Semester Final Examination: April-2024

1.	a)	State microprocessor. “Microprocessor acts as a CPU”-explain it.	[1+3]
	b)	Define the following terms- i. Program Counter  ii. Source Index  iii. Assembler  iv. Offset Address	[1x4]
	c)	Briefly explain the components of a microprocessor-based system.	[6]
2.	a)	Define instruction. Write 4-data transfer instructions and 4-arithmetic instructions.	[1+4]
	b)	List out the purposes of Accumulator and Data registers.	[4]
	c)	Draw the 8086 microprocessor's pin layout.	[5]
3.	a)	State microcontroller. Figure out the pin diagram of the 8051 microcontroller.	[1+4]
	b)	Describe the architectural diagram of the 8051 microcontroller with figure.	[7]
	c)	Write two uses of microcontroller in real life.	[2]
4.	a)	Summarize the segment registers of the 8086 microprocessor.	[4]
	b)	Examine the 8086 microprocessor's interrupt vector table with the accompanying figure.	[7]
	c)	Distinguish between software and hardware interrupts.	[3]
5.	a)	Show the architectural diagram of the 8086 microprocessor.	[4]
	b)	Point out the necessity of Parity and Auxiliary Carry flag registers.	[4]
	c)	Mention two features of each 80286, 80386, and Pentium microprocessor.	[6]
6.	a)	Explain Absolute, Indexed, and Register Indirect 8086 addressing modes with examples.	[6]
	b)	Given, CS=1000H, DS=2000H, SS=3000H, ES=4000H, BX=5000H, SI=6000H, DI=7000H, IP=8000H and BP=9000H. Find the memory location from where the 8086 accesses the data while executing the following instructions:     i) MOV DX, [BX+SI+6]              ii) MOV AL, [BP+DI+8]	[2x2]
	c)	Compare between RISC and CISC processors.	[4]
7.	a)	Perform Rotate Left and Rotate Carry Right instructions on data bits=10011010 and carry bit=1.	[6]
	b)	Make a short note on the co-processor.	[4]
	c)	Write four differences between 8085 and 8086 microprocessors.	[4]