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COMPUTER SYSTEM - Coggle Diagram

- - - - Keyboard, Microphone, Scanner, Mouse, Joystick
    - - Printer, Monitor, Speaker, Projector
    - - Wi-fi router
- - - - The CPU looks for data first in the cache, and if data is not found there, it looks in main memory.
        
        First look in cache for Data
        
        If data is in cache send it to CPU and Stop .
        
        If data is not in cache fetch from RAM
        
        Send data from RAM, write it to the cache and send it to the CPU.
  - - - L1
        
        ACCESS TIME- FAST
        
        CAPACITY- SMALL
      - L2
        
        ACCESS TIME- SLOW
        
        CAPACITY- LARGE
      - L3
        
        ACCESS TIME - SLOWER
        
        CAPACITY- VERY LARGE
- - - - DATA EXCHANGES
        
        Memory connection
        
        INPUT
        
        READ, WRITE, ADRESS, DATA
        
        OUTPUT
        
        DATA
        
        A word of data can be read from or written into the memory.
        
        The nature of the operation is indicated by read and write control signals.
        
        The location for the operation is specified by an address.
        
        I/O MODULE
        
        INPUT
        
        READ, WRITE, ADDRESS,INTERNAL DATA, EXTERNAL DATA
        
        OUTPUT
        
        INTERNAL DATA, EXTERNAL DATA, INTERUPT SIGNALS
        
        There are 2 operations: read and write.
        
        I/O module may control more than one external devices.
        
        I/O module may be able to send interrupt signals to the processor .
        
        CPU
        
        INPUT
        
        INTRUCTIONS, DATA, INTERRUPT SIGNALS
        
        OUTPUT
        
        ADDRESS, CONTROL SIGNALS, DATA
        
        The processor reads instructions and data, writes out data after processing, and uses control signals to control the overall operation of the system. - It also receives interrupt signals.