computing revision mindmap

computing revision mindmap

1. cache

   • small amount of memory which is a part of the cpu
   • more cache = more data
   • Level 1 cache is usually part of the cpu chip itself and is the fastest to access
   • L2 and L3 are bigger than L1 they are extra caches built between the cpu and the RAM

2. cores

   • A cpu can contain one or more processing units.
   • Each core contains an ALU, control unit and registers
   • it is common for computers to have two cores (dual
     • it is also possible that they can have four (quad) or even more
       • the purpose of these cores are that they improve the power to run multiple programs

3. clock speed

   • indicates the speed at the Cpu can run at
     • is possible to overclock which increases the overall speed of the cpu
   • corresponds with how many instructions cycles the cpu can do within a second

4. I/o controllers

   • allows an interface between a hardware device external to the motherboard
     • examples are : mouse, keyboard, disk drive and vpu