How Computers Work

By Sophia Hussain

Computer Systems

Computer systems have a CPU ( Central Processing Unit ) at their core. This performs all the calculations, operations and tasks that need to be done while someone uses the computer.

The Hard-drive

For permanent storage of data, most computers still have a hard disk drive or HDD. these work by magnetically storing binary code onto a metal disc. A mordern computer will probably have a hard disc drive that can store between 500MB to 1TB of data.

There are 1024 gigabytes in 1 terabyte