8085 Microprocessor Interview Questions and Answers
Here in the post 8085 Microprocessor Interview Questions and Answers , we are posting frequently asked questions of 8085 Microprocessor in interviews, exams and viva voice. The main motive of the post 8085 Microprocessor Interview Questions and Answers to give a brief idea of questions to interviewees and students at various levels of study.
- 8085 is a … bit processor (8 bits /16 bits)
- 8085 microprocessor has …… Address Lines(8/16)
- CPU stands for ...
- DAA stands for …
- Define Interrupt
- Define Accumulator
- Define Address
- Define Data Bus
- Define Assembler
- Define Assembly level language
- Define Clock Cycle
- Define Compiler
- Define DMA
- Explain Instruction XRI
- Define Looping
- Define Memory Interfacing
- Define Object Code
- Define Opcode
- Define Register
- Define RIM instruction
- Define Subroutine
- Define the purpose of Accumulator?
- DMA STANDS FOR …
- Draw block diagram of 8085?
- Explain function of ALU
- Draw the timing diagram of opcode fetch operation
- EPROM stands for …
- Explain 8257 DMA controller chip and its functions?
- Explain any two Arithmetic group instructions
- Explain any two Branch Instruction
- Explain DAA instruction
- Explain DAD Instruction
- Explain fetch and execute operation
- Explain handshaking interrupts of 8085
- Explain Hardware Interrupt
- Explain how de-multiplexing of AD7-AD0 take place.
- Explain implicit addressing mode
- Explain Instruction Cycle?
- Explain Software Interrupt Used In 8085.
- Explain the ADI data instruction?
- Explain the architecture of 8085 with block diagram
- Explain the concept of synchronous and asynchronous data transfer
- Explain the conditional JUMP instruction?
- Name any one single byte instruction?
- Write various addressing modes used in 8085 . Explain with suitable examples?
- Explain the data transfer instructions in case of 8085
- Explain the function of Address Bus
- Explain the functions of data transfer instruction
- Explain the instruction CMC?
- Explain the instruction RAR?
- Explain the LHLD address Instruction?
- Explain the pin configuration of 8085?
- Explain the process of the DMA in detail
- Explain the purpose of HLDA pin?
- Explain the steps involved in program execution
- Explain the various data transfer schemes used in 8085?
- Explain the various Registers used in intel 8085
- Explain various steps involved in the program execution
- Explain various types of flag of 8085
- Explain with examples the addressing modes of 8085 microprocessors?
- Fetch and Execute operations
- Give example of maskable interrupts?
- Give the examples of general purpose Registers?
- How are Interrupts classified in 8085?
- How many bits are needed to address 64 K memory location?
- how many cycles the instructions MOV A,B has?
- how many interrupts are there in 8085
- how many interrupts are there of 8085 microprocessor?
- how many lines are there in address bus of 8085
- How many machine cycles required for instruction MOV A,C
- How much memory is addressed by 8085
- How the instructions can be classified into groups ? Explain with examples?
- LIFO stands for …
- Define Machine language
- Name Various Registers Used in 8085 ?
- Name 16-bit Register in 8085
- Name and Explain the function of various flagsused in 8085?
- Name different addressing mode and Explain?
- Name Four Addressing Modes
- Name level triggered interrupts
- Name the addresses made used in MOV M,Cinstruction
- Name various data transfer schemes, Explain hand shaking schemes in details
- Explain RIM instruction
- Explain SIM instruction
- Stack works on … principle
- Use of counter and time delays
- What do you mean by machine cycle
- What do you mean by Wait state
- What do you understand by interrupts in 8085? Explain different types of interrupts in 8085
- What is a stack pointer
- What is address decoding
- What is clock frequency of 8085
- What is serial input output data transmission
- What is T state
- What is the direction of address bus
- What is the length of Register of 8085 microprocessor
- What is the purpose of ready signals
- What is the status flag Register? Explain
- What is the requirement of program counter in 8085
- Which instruction is used to load 16 bit number
- Which Interrupt has highest priority?
- Which pin is used for de-multiplexing of address and data bus
- Which Register pains are to be directly stored in the memory
- Why it id necessary to multiplex data and address bus in 8085
- Explain fetch and execute operation .
- Write down the difference between memory mapped I/O and I/O mapped I/O?
- Write functions of timing and control unit along with the diagram
- Write the functions of the address and data bus with diagram
- Write the Names of volatile
- Write the use of stacks and subroutines in INTEL 8085
- Explain the DAD instruction?
- Briefly describe DMA data transfer schemes?
- Compare memory mapped and input output mapped I/O
- Compare CALL, JMP and PUSH instruction
- Differentiate b/w RIM & SIM instructions
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