Computer Science

Computer Science

1. computer system

   • A computer

2. Computer system

   • A computer is a thing which can: input data, process data, output data and store data. A calculator, for example, has keys to input numbers, it does the calculation then outputs the result on it's screen. Some can store previous calculations

3. CPU

   • Processor
     • Control Unit
     • ALU (Arithmetic Control Unit)
     • Registers
   • ALU
   • Internal Cache
   • Clock
   • Buses
     • Address bus
     • Data bus
     • Control Bus

4. Fetch, Decode, Execute

   • The cycle a CPU goes through when running a process

5. Von Neuman architexture

   • The Von Neumann Architexture is a type of computer layout which allowes a control unit to both a program to run and data be stored. An example of this is a domestic desktop PC. This meant that computers couldn't be multi-purpose.

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