James Elgey
Mind Map by James Elgey, updated more than 1 year ago
James Elgey
Created by James Elgey over 6 years ago


Mind Map on Hardware, created by James Elgey on 10/14/2015.

Resource summary

  1. The Central Processing Unit
    1. Uses of CPU
      1. Brain of the Computer
        1. Handles all computer data
          1. Carries out 3 actions: Fetch-Decode-Execute
            1. Fetch
              1. Collects the data
              2. Decode
                1. This is where the data that was fetched is decoded
                2. Execute
                  1. This is where the action commanded is performed
                3. Clock speed and cores
                  1. Can complete millions of actions at once
                    1. Determines how fast data is processed
                      1. The more cores the faster data is processed
                        1. Slow clock speed means data is being processed slowly
                      2. Measured in hertz (Hz)
                        1. One Hz = 1 instruction each second
                        2. If you had a quad core processor it would multiply the amount of hertz by 4
                          1. Kilohertz (KHz)
                            1. Megahertz (MHz)
                              1. Gigahertz (GHz)
                                1. 1 billion cycles per second
                                2. 1 million cylces per second
                                3. 1000 cycles per second
                              2. Cache
                                1. Stores data that might need to be used again
                                  1. Quicker than main memory
                                    1. Stores very little
                                2. Motherboard
                                  Show full summary Hide full summary


                                  connor's flash cards
                                  Computing Hardware - CPU and Memory
                                  GCSE Computing: Hardware
                                  Yasmin F
                                  Input and Output Devices
                                  Jess Peason
                                  B Ilo
                                  INFORMÁTICA - Periféricos de entrada y salida
                                  Serna Izaoly
                                  Hardware, Software and Networking
                                  Hardware and Software
                                  Memory & Storage
                                  Ben Fellows
                                  Conceptos Básicos de Informática
                                  jose antonio negreros orellana
                                  Computer Hardware SCA