Exam Details
| Subject | Microprocessor | |
| Paper | ||
| Exam / Course | Diploma In Electronics And Communication Engineering (DECVI)/ Advanced Level Certificate Course In Electronics And Communication Engineering (ACEVI)/ | |
| Department | School of Engineering & Technology (SOET) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | June, 2015 | |
| City, State | new delhi, |
Question Paper
1. Choose the correct answer for the following:
Purpose of READY signal is
to indicate to user, that microprocessor is working and ready for use.
to provide for proper WAIT states when microprocessor is communicating with slow peripheral devices.
to provide for slowing down of fast peripheral devices so as to communicate.
None of the above
The addressing mode used in instruction LDA 0345 H is
Direct
Indirect
Indexed
Immediate
Number of address bus lines in 8085 microprocessor is
6
8
12
16
Stack used in 8085 microprocessor is
FIFO
LIFO
FILO
None of the above
When a subroutine is called, the address of instruction following the CALL instruction is stored in
Stack pointer
Accumulator
Program counter
Stack
The instruction RST 7 is a
restart instruction that begins the execution of a program
one-byte call to memory address 0038H
one-byte call to memory address 0007H
hardware interrupt
The direction of address bus is
Unidirectional into MP
Unidirectional out of MP
Bidirectional
Mixed direction is used, some lines into MP and some lines out of MP
2. What is addressing mode Explain the various addressing modes of 8085 with examples.
Draw and explain the internal diagram of ALU.
Sixteen bytes of data are stored in memory locations at 2050H to 205FH. Write a program to transfer the entire block of data to new memory location starting at 2070H.
List the elements of 8255 Programmable Peripheral Interface and explain its various operating modes.
Explain the following in the context of 8086:
BHE
DT/R
TEST
What is a subroutine? Also explain the instructions CALL and RET.
Define the stack, the stack pointer and the program counter. Also give their uses.
Explain the difference between peripheral mapped and memory mapped I/O techniques.
Explain the instructions EI, DI and RST and their functions in the 8085 interrupt process.
7. Write short notes on any two of the following:
80386 Microcontroller
AID and D/A Converter
Programmable Interval Timer 8253
Purpose of READY signal is
to indicate to user, that microprocessor is working and ready for use.
to provide for proper WAIT states when microprocessor is communicating with slow peripheral devices.
to provide for slowing down of fast peripheral devices so as to communicate.
None of the above
The addressing mode used in instruction LDA 0345 H is
Direct
Indirect
Indexed
Immediate
Number of address bus lines in 8085 microprocessor is
6
8
12
16
Stack used in 8085 microprocessor is
FIFO
LIFO
FILO
None of the above
When a subroutine is called, the address of instruction following the CALL instruction is stored in
Stack pointer
Accumulator
Program counter
Stack
The instruction RST 7 is a
restart instruction that begins the execution of a program
one-byte call to memory address 0038H
one-byte call to memory address 0007H
hardware interrupt
The direction of address bus is
Unidirectional into MP
Unidirectional out of MP
Bidirectional
Mixed direction is used, some lines into MP and some lines out of MP
2. What is addressing mode Explain the various addressing modes of 8085 with examples.
Draw and explain the internal diagram of ALU.
Sixteen bytes of data are stored in memory locations at 2050H to 205FH. Write a program to transfer the entire block of data to new memory location starting at 2070H.
List the elements of 8255 Programmable Peripheral Interface and explain its various operating modes.
Explain the following in the context of 8086:
BHE
DT/R
TEST
What is a subroutine? Also explain the instructions CALL and RET.
Define the stack, the stack pointer and the program counter. Also give their uses.
Explain the difference between peripheral mapped and memory mapped I/O techniques.
Explain the instructions EI, DI and RST and their functions in the 8085 interrupt process.
7. Write short notes on any two of the following:
80386 Microcontroller
AID and D/A Converter
Programmable Interval Timer 8253
Other Question Papers
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- Advance Microprocessor And Architecture
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- Analog Communication
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