Previous year question paper for MPD (Diploma Electronics and Communication Engineering 4th)

Microprocessor and Peripheral Devices

Previous year question paper with solutions for Microprocessor and Peripheral Devices from 2014 to 2017

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1. Evolution of Microprocessor (04 hrs)

Typical organization of a microcomputer system and functions of its various blocks.

Microprocessor, its evolution, function and impact on modern society

2. Architecture of a Microprocessor (With reference to 8085 microprocessor)

(12 hrs)

Concept of Bus, bus organization of 8085, Functional block diagram of 8085 and function of

each block, Pin details of 8085 and related signals, Demultiplexing of address/data bus

generation of read/write control signals, Steps to execute a stored programme

3. Instruction Timing and Cycles (08 hrs)

Instruction cycle, machine cycle and T-states, Fetch and execute cycle.

4. Programming (with respect to 8085 microprocessor) (16 hrs)

Brief idea of machine and assembly languages, Machines and Mnemonic codes. Instruction

format and Addressing mode. Identification of instructions as to which addressing mode they

belong. Concept of Instruction set. Explanation of the instructions of the following groups of

instruction set. Data transfer group, Arithmetic Group, Logic Group, Stack, I/O and Machine

Control Group. Programming exercises in assembly language. (Examples can be taken from

the list of experiments).

5. Memories and I/O interfacing (10 hrs)

Concept of memory mapping, partitioning of total memory space. Address decoding, concept

of peripheral mapped I/O and memory mapped I/O. Interfacing of memory mapped I/O devices.

6. Interrupts (04 hrs)

Concept of interrupt, Maskable and non-maskable, Edge triggered and level triggered

interrupts, Software interrupt, Restart interrupts and its use, Various hardware interrupts of

8085, Servicing interrupts, extending interrupt system

7. Data Transfer Techniques (04 hrs)

Concept of programmed I/O operations, sync data transfer, async data transfer (hand shaking),

Interrupt driven data transfer, DMA, Serial output data, Serial input data

8. Peripheral devices (06 hrs)

8255 PPI and 8253 PIT, 8257 / 8237 DMA controller, 8279 Programmable KB/Display

Interface, 8251 Communication Interface Adapter