Notes for BSc CSIT

  Microprocessor A Microprocessor is a programmable device that takes in input, performs some arithmetic and logical operations over it and produces the desired output.  In simple words, a Microprocessor is a digital device on a chip that can fetch instructions from memory, decode and execute them, and give results. It is an important part of a computer architecture without which you will not be able to perform anything on your computer. How does a Microprocessor Work? The working of a microprocessor can be understood by breaking it down into the following four key steps − Fetch − It is the very first function that a microprocessor performs. In this step, the microprocessor accesses data and instructions from the memory unit or an input device. Decode − After receiving data and instructions, the microprocessor decodes them and interprets for the computing process. Execute − In this step, the microprocessor performs the requested operations on the data. Store − Finally, the res...