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Thursday, August 26, 2010

Assignment-I
Q1)
  1. Why is data bus bidirectional?
  2. Why is Accumulator called Special Register?
  3. Why demultiplexing of AD0-AD7 lines required?
  4. What is PSW?
  5. Differentiate between Microprocessor & CPU.
  6. What is Stack Pointer?
  7. Define bit, byte & word.
  8. Explain the terms SSI, MSI & LSI.
  9. In a Microprocessor processing unit, how an Instruction is executed?
  10. Define Instruction Cycle, Machine Cycle & T-State

Q2)
  1. List the sequence of Events that occur when 8085 MPU reads from Memory.
  2. Draw the Timing Diagram of MOV A, M and LDA 2500H Instructions.
  3. If the Memory chip size is 256 X 1 bit, how many chips are required to make up 1K(1024) bytes of memory?
  4. Draw the Pin Diagram of 8085 Microprocessor.