Microcprocessor and microcontroller part

MPMC

1. MPMC Training

2. What type of architecture used in 8085 microprocessor? What is the function of accumulator What are the different types of flags in 8085 microprocessor? What are the types of general purpose registers in 8085?   What is the length of stack pointer in 8085 microprocessor? And what is its use? What are the various interrupts in 8085 microprocessor? Which is the highest priority interrupt? What is the memory size of 8085 microprocessor?

3. Which type of cycle is used for fetch and execute instruction? What is a Microprocessor? Why crystal is  being preferred as a clock source? Describe Tri-state logic? What will happen if HLT instruction is executed in processor? Describe briefly Program counter? Name the 1st / 2nd / 3rd / 4th generation processor? What does EU do?

4. Mention RST for the TRAP? Can an RC circuit be used as clock source for 8085? What are the various interrupts in 8086? What is meant by Maskable interrupts? Which interrupts are generally used for critical events? What is SIM and RIM instructions? Which is the tool which is used to connect the user and the computer?

5. Number of the times the instruction sequence below will loop before coming out of loop is MOV AL, 00h A1: INC AL JNZ A1 00 (B) 01 (C) 255 (D) 256 23. This program code will be executed continuously: STAT:MOV A, #01H  JNZ STAT A. True B.False  

6. 24. The address space of the 8051 is divided into four distinct areas: internal data, external data, internal code, and external code. A. True B.False   25. Data transfer from I/O to external data memory can only be done with the MOVX command. A. True B. False   26. Difference between JUMP and CALL instruction? 27. MOV A, @ R1 will:   A . copy R1 to the accumulator B. copy the accumulator to R1 C. copy the contents of memory whose address is in R1 to the accumulator D. copy the accumulator to the contents of memory whose address is in R1

7. Can port 0 be used as input output port? Which 2 ports combine to form the 16 bit address for external memory access in 8051? Say About Clock, Machine & Instruction Cycle What is the difference between Harvard and Newman architecture? How many memory locations address bus can access (also tell in kb )? How much on-chip RAM is available ? How much on-chip ROM is available ?

8. Tell the addresses which are bit addressable? 8051 series of micro controllers are made by which of the following companies? a ) Atmel b ) Philips c ) none of the mentioned d ) both of the mentioned When 8051 wakes up then 0×00 is loaded to which register? a) DPTR b ) SP c ) PC d ) PSW When the micro controller executes some arithmetic operations, then the flag bits of which register are affected? a) PSW b ) SP c ) DPTR d ) PC

9. How is the status of the carry, auxiliary carry and parity flag affected if write instruction MOV A,#9C ADD A,#64H a) CY=0,AC=0,P=0 b ) CY=1,AC=1,P=0 c) CY=0,AC=1,P=0 d ) CY=1,AC=1,P=1 How are the bits of the register PSW affected if we select Bank2 of 8051? a) PSW.5=0 and  PSW.4=1 b ) PSW.2=0 and PSW.3=1 c) PSW.3=1 and PSW.4=1 d) PSW.3=0 and PSW.4=1