Hindustan Institute of Technology and Science (HITE) 2006 B.E Computer Science Microprocessor And Microcontroller - Question Paper

MICROPROCESSOR AND MICRO CONTROLLER

PART A:
1.What is a bi-directional bus?
2.What is the function of accumulator?
3.What is a flag?
4.What is the function of program counter?
5.Define stack pointer in 8085?
6.What are the function of RD & WD,signals?
7.What is the use of ALE signals?
8.How is the clock speed of 8085 set
9.Explain the need of demultiplexing?
10.What is the use of timing diagram?

PART B:
11.(a)What are the various addressing modes in 8085?Explain with example?
OR
(b)Draw the architecture of 8085 microprocessor and explain?
12.(a)Draw the timing diagram for memory learn operation performed in 8085?
OR
(b)Explain the subsequent instructions DAA,LXI,CMC.
13.(a)What are the difference ranging from PUSH and POP operation?
OR
(b)Write an assembly language program,to convert binary to BCD number?
14.(a)Write a program to count from 0 to 50H with a delay of 50 ms ranging from every count and display the count at 1 of the output ports?
OR
(b)Write a program using ADI instruction to add 2 Hexadecimal numbers and to display the ans at an output port?
15.(a)Draw the timing diagram of I/O learn cycle in 8085 and discuss it?
OR
(b)How the data and address lines are demultiplexed in 8085?

Earning:   Approval pending.