Hardware

Hardware

1. THE CPU

   • CPU stands for central processing unit.
     • Frequently used data is stored within the CPU as it contains something called cache memory, cache memory is quicker to access and isn't very big.
   • The more cores within the CPU the better as the cores a like smaller processors within the processor that carry out instructions.
     • The speed of a processor is measured in Ghz, so if the speed of a processor is 3.2 GHz the processor would be able to carry out the fetch-execute cycle 3.2 billion times a second

2. ROM

   • ROM stands for Read Only Memory
     • ROM is unchangeable
   • ROM will remember information such as the date and time and how to start the computer up.
     • It remembers this because ROM is non-volatile memory which means it does not require power to remember the contents such as date and time.