system architecture

Beschreibung

Mindmap am system architecture, erstellt von Declan Fletcher am 08/11/2017.
Declan Fletcher
Mindmap von Declan Fletcher, aktualisiert more than 1 year ago
Declan Fletcher
Erstellt von Declan Fletcher vor mehr als 7 Jahre
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Zusammenfassung der Ressource

system architecture
  1. what effects a computer?
    1. things that effect include, core the more the better, MGz, Ghz. for every core you add you times the GHz by that amount
      1. other thind that affect it is the clock speed, the ammout of RAM, cache, motherboard and cores
      2. In computer engineering, computer architecture is a set of rules and methods that describe the functionality, organization, and implementation of computer systems. Some definitions of architecture define it as describing the capabilities and programming model of a computer but not a particular implementation
        1. definitions
          1. Cache is a small amount of memory which is a part of the CPU - closer to the CPU than RAM
            1. The CPU control unit automatically checks cache for instructions before requesting data from RAM. This saves fetching the instructions and data repeatedly from RAM – a relatively slow process which might otherwise keep the CPU waiting
              1. The purpose of the CPU is to fetch, decode and execute instructions
            2. The motherboard is a circuit board that connects the CPU to the memory and all the other hardware. The CPU sits on the motherboard
              1. Buses are circuits on the motherboard that connect the CPU to other components. There are many buses on the motherboard. A bus moves instructions and data around the system. The speed of a bus is measured in megahertz (MHz). The faster the bus, the faster data is communicated. The speed of the motherboard is defined by the bus speed.
              2. Memory is the area where the computer stores or remembers data. Memory provides the CPU with its instructions. There are different types of memory, and each one plays an important role in the running of a computer system. Memory is sometimes called primary memory.
                1. Memory is either volatile or non-volatile. Volatile memory only stores information to run programs while the computer is on. It is reset and emptied once the computer is turned off. Volatile memory requires electricity to store data using transistors and capacitors.
                2. RAM is the main place for storing instructions and data whilst a program is being executed. It is also called main memory. Program data is copied into RAM before the CPU can run the program.
                  1. RAM is usually measured in gigabytes. The more gigabytes of RAM a computer has, the more programs and operations it can handle at the same time.
                  2. clock spped measn you can execute more instructions per second
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