Microprocessor & Interfaces

UNIT-I 1. Define microprocessors? A semiconductor device(integrated circuit) manufactured by using the LSI technique. It includes the ALU, register arrays, and control circuits on a single chip. 2. Define microcomputer? A computer that is designed using a microprocessor as its CPU. It includes microprocessor, memory and I/O. 3. Define ROM? A memory that stores binary information permanently. The information can be read from this memory but cannot be altered. 4. What is an ALU? The group of circuit that provides timing and signals to all operation in the computer and controls data flow. 5. What is a Microcontroller? A device that includes a microprocessor, memory, and I/O signal lines on a single chip, fabricated using VSLI technology. 6. What is an Assembler? A computer program that translate an assembly language program from mnemonics to the binary machine code of a computer. 7. What are the four primary operations of a MPU? 1. Memory read 2. Memory write 3. I/O read 4. I/O write 8. W...

  1. What is Microprocessor? Give the power supply & clock frequency of 8085 ? Ans:- A microprocessor is a multipurpose, programmable logic device that reads  binary instructions from a storage device called memory accepts binary data as  input and processes data according to those instructions and provides results as  output. The power supply of 8085 is +5V and the clock frequency is 3MHz. 2. List few applications of microprocessor-based systems.  Ans:-   It is used: i. For measurements, display and control of current, voltage, temperature, pressure, etc.  ii. For traffic control and industrial tool control. iii. For speed control of machines. 3. What are the functions of an accumulator? Ans:-  The accumulator is the register associated with the ALU operations and  sometimes I/O operations. It is an integral part of ALU. It holds one of the data to be  processed by ALU. It also temporarily stores the result of the operation perform...