Computer

Computer

1. CPU

   • Central Processing Unit
   • The CPU is the brain of the computer and is where most of the calculations take place
   • Arithmetic logic unit (ALU)
     • This performs simple arithmetic and logical operations.
   • The control unit (CU)
     • This manages the various components of the computer.
   • Cache
     • This serves as high-speed memory where instructions can be copied to and retrieved.
   • Clock Speed
     • Clock Speeds are usually determined in MHz, 1 MHz representing 1 million cycles per second
     • GHz, 1 GHz representing 1 thousand million cycles per second.
     • The higher the CPU speed, the better a computer will perform

2. RAM

   • Random Access Memory
   • The RAM stores all the data that is being run. These means the more ram you have, the more things you can do at once
   • RAM is volatile, this means when it is turned of it looses the data that is not saved.

3. ROM

   • Read Only Memory
   • The ROM holds the instructions for the computer to turn on, even when it is turned of it keeps the data
   • ROM is is non-volatile. this means even when the power is not connected it retains its memory.