Download Previous Year Microprocessor 8085 MP PSBTE Dec 2009 Paper at PSBTEPAPER.COM

EXAM/ECE/CSE/IT/EEE/6129/0624/Dec 2009

    Microprocessor 8085 PSBTE Dec 2009 Paper                                                                SECTION-A

Q1. Do as directed.                                                        15×1=15

  1. 8085 is having 8 data Lines.

  2. SIM stands for Set Interrupt Mask.

  3. There are Five  number interrupts in 8085 .

  4.  TRAP is the highest priority Interrupt.

  5. ALE stands for Address Latch Enable.

  6. Push and Pop  are the stack instructions .

  7. Accumulator is 8 bit Register.

  8. Program Counter is 16 bit Register.

  9. DMA stands for Direct Memory Access. 

  10. Return instruction is always the last instruction of of subroutine.

  11. EPROM stands for Erasable Program Read Only Memory .  

  12. XCHG stands for Exchange.

  13. Number of ports in 8255 are Three. 

  14. LIFO stands for Last In First Out. 

  15. MVI B, 05 H is having  Immediate addressing Mode .


Q2. Attempt any five questions.                                     5×6=30

  1. What are the applications of microprocessors?

  2. Draw the pin diagram of

  3. Explain the various addressing modes of 8085 ?

  4. What are the various steps involved in execution of program ?

  5. Explain the bus organization of 8085?

  6. What is Stack? Explain its Function.

  7. What is flag register of 8085? Explain all Flags.


Q3. Attempt any three questions.                                 3×10=30

  1. Explain various addressing modes of 8085 ?

  2. Explain various hardware interrupts of 8085 ?

  3. What is DMA data transfer scheme? Explain in details ?

  4. Draw and explain block diagram of 8255 ?

  5. Draw the Internal Architecture of 8085 and Explain Various Functional Blocks ?

microprocessor 8085 mp

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Section a:- microprocessor 8085 mp DEC\’09 diploma paper solution

The Data bus in 8085 is ______ bit

8 Bit

A Maximum memory that can be connected to 8085 microprocessor is  ____


Program Counter (PC) in 8085 is used to point to the address of instruction to be _____


EPROM Stands for ____________

Erasable Program Read Only Memory. 

A 8085 has ___________ addressing  mode


DAA stands for _________________ 

Decimal Adjust Accumulator

____________ is the highest priority Interrupt.


DMA means  ______________

Direct Memory Access.

________ instruction is used to output data from SOD Line.

SIM instruction 

BSR stands for ____________

Bit Set Reset Mode.

Download Microprocessor 8085  Diploma Paper May 2018 Solution Click Here

Section B : Microprocessor PAPER dec 2009 solution here

Short Note on the special purpose registers of 8085 ?

Special purpose registers of 8085 Click Here.

Explain the function of assembler, compiler and Interpreter. Describe instruction cycle, machine cycle and fetch Cycle What is the basic difference between programmed data transfer and DMA scheme ? Describe the flags of 8085 ?

Solution Click Here

Explain how address and data lines are de-multiplexed in 8085 ?

Solution Click Here

Differentiate between memory mapped I/O and I/O mapped I/O ?

Poor Power Factor

Six important Advantages of Electrical Energy ?

Advantages of Electrical Energy

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microprocessor mp 8085 dec 2009 diploma PAPER

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Section c microprocessor 8085 dec 2009 paper SOLUTION HERE

Explain various addressing modes of 8085 ? Explain various hardware interrupts of 8085 ? What is DMA data transfer scheme? Explain in details ?

 Solution Click Here

Draw and explain block diagram of 8255 ? Draw the Internal Architecture of 8085 and Explain Various Functional Blocks ?

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