Computer Architecture


                                                                            fig.1


Von Neumann architecture is a  a very simple and  realistic architecture  because it is easy to undersatnd and we can easily understand that how data  and program store  in memory . in the above fig .1   when we input data it stores in memory unit which is also called primary memory   , very beutifully primary  memory store  data and program data mens a,b, c, int i, float g, etc  and command like  move delete etc   from  memory unit   when data and comes to alu which is stand for arthmatic and logic unit  which works fastest than other part of cpu and handdel  operation like addition , subtarction, multiplication ,division, so due to fastest speed   we need a memory which store data in between ram and alu  which is called register , Registers are embedded within the CPU." and among all it is fastest  so handel diffrently with diffrent manner like accumulator register and program register , memory instruction register  ,memory address register ,memory buffer register , whenever ram also keeps memory address but due to fast work of alu  cpu need register  for example  if you are working two or three persons  one is working very fast campratively two or three  so need to stor some daat to person two which can  work fastly so it means when  a finish work r stores and then sende to ram  now the most important work of all these systems are control unit which keeps control to  nbetween all input and output data  now  because we need data from input device and need information from output device so the process of input and out put should be control which is handel by control unit 



 

Key Components Explained:

  • Input Device: Takes user input (e.g., keyboard, mouse).

  • Main Memory: Stores both instructions (program) and data.

  • Control Unit (CU): Directs operations, fetches instructions from memory.

  • Instruction Register & Decoder: Holds and interprets instructions.

  • ALU: Performs arithmetic and logical operatio

  • Output Device: Displays results (e.g., monitor, printer).







      
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