Techincal Interview Questions - Microprocessor questions


  • · Which type of architecture 8085 has?
  • · How many memory locations can be addressed by a microprocessor with 14 address lines?
  • · 8085 is how many bit microprocessor?
  • · Why is data bus bi-directional?
  • · What is the function of accumulator?
  • · What is flag, bus?
  • · What are tri-state devices and why they are essential in a bus oriented system?
  • · Why are program counter and stack pointer 16-bit registers?
  • · What does it mean by embedded system?
  • · What are the different addressing modes in 8085?
  • · What is the difference between MOV and MVI?
  • · What are the functions of RIM, SIM, IN?
  • · What is the immediate addressing mode?
  • · What are the different flags in 8085?
  • · What happens during DMA transfer?
  • · What do you mean by wait state? What is its need?
  • · What is PSW?
  • · What is ALE? Explain the functions of ALE in 8085.
  • · What is a program counter? What is its use?
  • · What is an interrupt?
  • · Which line will be activated when an output device require attention from CPU?


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