The CPU- What you need to know

The CPU- What you need to know

1. Types

   • RISC
     • reduced instruction set computing, more efficient than CISC at doing simple tasks as the instruction set is much smaller
   • CISC
     • complex instruction set computing, a more complex type of CPU used in laptops and desktops

2. Parts of

   • Control Unit
     • controls the data flow of the cpu
   • Aritimatic and Logic unit
     • Performs mathematical and logical equations
   • Immediate access store
     • Also known as Ias. This is the closest store of information the cpu has

3. Factors that effect performance

   • Cache size
     • If cache size is larger, the CPU doesn't have to look as far for data to process
   • Clock speed
     • if you increase this the CPU is forced to do the fetch decode execute cycle more times per second
   • Cores
     • if there are more cores the CPU can process more data at once
   • What is Benchmarking
     • Testing the Hardware to see if it reaches a certain standard

4. Purpose

   • Fetch- Decode- Execute cycle
     • Fetches data
     • Decodes data
     • Execute instructions
   • Brain of the computer
   • The purpose of the CPU is to process data