7/25/2019 MMI IMP Questions_s

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1 Draw the internal block diagram of microprocessor 8085 and explain the working of (i) Program Counter register

(ii) Flag register with Bit significance.

2 What multiplexing? How it is done in microprocessor 8085 for address and data bus? Explain with neat diagram.

3

Some of the pins of 8085 are listed below .For each pin show whether it is an input line or an output line and

mention its function.

(1) ALE (2) SID (3) IO/ M (4) READY (5) HOLD (6) RESET OUT (7) RST 7.5

4 Explain the execution of MOV C, M instruction using Timing diagram.

5 Write a detailed note on Memory Classification

6 Explain the register banks and its switching in 8051. Explain SFR space in brief.

7 Discuss the difference between microprocessor and microcontroller.

8 Explain the working of timer in 8051 using the configuration of TCON and TMOD registers. Explain the difference

between timer operation in mode 0 and mode 1.

9

Explain the Interrupt facility of 8051 microcontroller using IE and IP register. Also mention the internal priority of

Interrupt and their vector locations.10 Explain editor, assembler, compiler and linker. Also explain assembler directives. (i) ORG (ii) EQU (iii) END

11 Draw and explain interfacing of external Program ROM with 8051

13 Discuss the internal RAM structure of 8051. Explain SFR space in detail.

14 What are the addressing modes for 8051? Explain in brief giving suitable example.

15 Explain the programming model of 8085. State the purpose of temporary register W & Z.

16 Draw & explain the physical port structure and also list the alternate functions of all the ports of 8051.

17 With the help of diagram show how demultiplexing of address/data lines AD0 AD7 can be achieved? Also explainthe generation of control signals MEMW , MEMR , IOR & IOW.

18 Explain the special function registers SCON & SBUF in 8051 serial communication.

19 What are the interrupts available in 8051? What is the default priority & how it can be changed?

20 Compare VonNeumann & Harvard architecture, CISC & RISC processors.

21 Explain all the bits of TMOD register & hence find the control word for selecting timer 0 in mode 2.

Subject:Microprocessor&MicrocontrollerInterfacing

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