System Architechture and Memory

System Architechture and Memory

1. CPU

   • Process
     • Fetch
       • Fetchs code from the RAM
     • Decode
       • Decodes the information
     • Execute
       • Completes the task the information contained
   • Cores
     • The more cores that are added the faster the CPu will fetch, decode and execute code

2. Volatile

   • RAM
     • Random Access Memory
       • stores information but loses it one the PC is turned off

3. Cache

   • 3 levels
     • Level 1
       • Faster but has the least amount of storage
     • Level 2
       • Slower that Level one but has more storage
     • Level 3
       • The slowest out of the 3 levels but has the most storage

4. Non-Volatile

   • ROM
     • Read only Memory
       • Store the boot up system of a PC, does not lose its data when the PC is turned off

5. Register

   • small amounts of high-speed memory contained within the CPU.
     • Examples: the address of the next instruction to be executed the current instruction being decoded the results of calculations

6. Clock

   • The CPU contains a clock which is used to coordinate all of the computer's components. The clock sends out a regular electrical pulse which synchronises (keeps in time) all the components.

7. Buses

   • A bus is a high-speed internal connection. Buses are used to send control signals and data between the processor and other components.

8. Virtual Memory

   • an operating system that enables a computer to be able to compensate shortages of physical memory by transferring pages of data from random access memory to disk storage