B.TECH - Semester 6 microprocessors and applications Question Paper 2020 (jan)
Practice authentic previous year university questions for better exam preparation.
Sample Questions
- Explain the purpose of the following signals in 8085. (i) READY (ii) AD0-AD7 (iii) HOLD (iv) $I \mathrm{O} / \mathrm{M}$
- Explain the purpose of the following signals in 8085. (v) INTR.
- Write delay subroutine for 0.4 sec . Assume 3 MHz clock.
- Calculate the value of each of the physical addresses in 8085. (i) $1000 \mathrm{H}: 1234 \mathrm{H}$ (ii) $0100 \mathrm{H}: \mathrm{ABCDH}$
- Why segmentation is needed in 8086. Explain.
- Explain any $\mathbf{4}$ features of Pentium Processors. Module - I
- (a) Draw the architecture of 8085. Explain the function of each block. ..... 15
- (b) Write a program to find the largest of 10 numbers ..... 5 OR
- (a) What are the 5 different groups of 8085 instruction set. Explain each with examples. ..... 10
- (b) Write a program to rearrange an array of 10 numbers in ascending order. ..... 10 Module - II
- (a) Draw the timing diagram of instruction LDA 6200 H and explain. ..... 12
- (b) Explain about Hardware Interrupts and Software interrupts of 8085. ..... 8 OR
- (a) Design memory systems to interface 2 k ROM and 4 k RAM using $2 \mathrm{~K} \times 8$ - bit memory chips. ..... 10
- (b) Differentiate between programmed data transfer and interrupt driven data transfer schemes. ..... 10 Module - III
- (a) What are the different addressing modes of 8086. Explain each with example. ..... 10
- (b) Write an assembly language program using 8086, to transfer a block ofmemory from memory location 20400 h to 20500 h . Assume the number ofbytes to be transferred is stored in the count register. 10OR
- (a) Draw the architecture of 8086 and Explain the registers. ..... 12
- (b) Explain minimum mode operation of 8086. ..... 8
- (a) Draw the internal architecture of PPI 8255 and explain. ..... 10
- (b) Explain with diagram how DAC can be interfaced with 8085. Write aprogram to generate a triangular wave.10
- (a) What are the different modes of operation of 8255 . Explain. ..... 10
- (b) Explain how matrix key board can be interfaced with 8086. ..... 10