Systems Architecture

Systems Architecture

1. CPU

   • Main component within a computer
   • Location of the fetch-decode-execute cycle

2. RAM

3. Cache

   • Smallest but fastest form of memory
   • Can speed up a computer
   • Contains frequently used instructions (due to close proximity to CPU)

4. Secondary Storage

   • An external device containing extra storage space for a computer
   • Includes Memory Sticks, CD/DVDs, External Hard Drives and SD Cards

5. Accumulator

   • Stores intermediate arithmetic and logic results
   • In the CPU

6. Embedded Systems

   • Used to provide specific, pre-defined functions
   • They do not rely upon an OS
   • Built into another device
   • Made up of hardware and software