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Hardware

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Mapa Mental sobre Hardware, creado por bcook11 el 13/01/2016.
bcook11
Mapa Mental por bcook11, actualizado hace más de 1 año
bcook11
Creado por bcook11 hace casi 9 años
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Resumen del Recurso

Hardware
  1. CPU
    1. ALU - arithmatic logic unit
      1. does the maths
      2. immediate access store
        1. register
        2. control unit
          1. recieves instructions from RAM and directs
          2. fetch, decode, execute cyle
            1. process it
              1. work out what to do
                1. fetch instructions from RAM
                2. number of cores
                  1. not twice as fast
                    1. dues improve speed
                      1. dual/quad/out
                      2. clock speed
                        1. measured - 1000 million in GHz per second
                        2. cache
                          1. high speed memory
                        3. users with special needs
                          1. speech recognition
                            1. eyetyper
                              1. braille keyboard
                              2. secondary storage
                                1. solid state
                                  1. like USB
                                  2. optical
                                    1. colour
                                    2. magnetic
                                    3. memory
                                      1. cashe
                                        1. virtual
                                          1. RAM
                                            1. volitile
                                            2. Flash
                                              1. USB
                                              2. ROM
                                                1. Boot sequence
                                              3. Binary logic
                                                1. allows use of logic gates
                                                  1. AND
                                                    1. OR
                                                      1. NOT
                                                      2. high tolerance
                                                        1. stops mistakes
                                                        2. computer components use O & I (on and off)
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