Central Processing Unit (CPU)

Description

Mind Map on Central Processing Unit (CPU), created by RodixG on 10/13/2014.
RodixG
Mind Map by RodixG, updated more than 1 year ago
RodixG
Created by RodixG over 10 years ago
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Resource summary

Central Processing Unit (CPU)
  1. Arthimetic and logic unit (ALI )
    1. Performs calculations on the data
      1. Logical and mathematical data
      2. Have small amounts of registers
      3. The control unit
        1. Controls operations within computer
          1. Control Unit sends and receives signals from all parts of the computer. makes sure that all processes take place at the right time and in the correct order. These signals travel along a control bus.
          2. Memory storage (registers)
            1. A register is a place where a single item of data can be stored
              1. Memory address register (MAR)
                1. Computers have a few that server different purposes
                  1. Memory address register (MAR)
                    1. Status register
                      1. Instruction register
                        1. Memory buffer register
                      2. Data bus
                        1. The path of which data moves
                          1. Address bus
                            1. Where the address of data moves
                              1. Buses
                                1. A bus is a set of connections which can be shared by multiple hardware components in order to communicate with one another.
                                  1. Used to reduce number of pathways
                                2. Control bus
                                  1. Where signals from the control unit travel along
                                  2. RAM
                                    1. Temporary storage (memory
                                      1. Multiple numbers of store locations
                                        1. Identified by address'
                                      2. Bits, Bytes and Words
                                        1. Bit
                                          1. A Bit is 0, or 1
                                            1. e.g. 1011, is a 4 - bit binary number
                                            2. 8-bits = 1-byte
                                            3. Byte
                                                1. 1024 bytes = 1 kilobyte (K) 1024 kilobytes = 1 megabyte (Mb) 1024 megabytes = 1 gigabyte (Gb) 1024 gigabytes = 1 terabyte (Tb)
                                                2. Word
                                                  1. Number of bits a CPU can handle at once
                                                    1. usually 16, 32, 64 or 128
                                                  2. Computer memory consists of two state devices, e.g. on, off
                                                    1. All data (text, pictures, sounds, video clips etc) is stored as binary numbers.
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