Computers understand data from something called binary which is represented by ones and zeros, the binary language only has two codes on and off.
Types of storage data
there are 2 types of storage devices in your computer there is the main one that is measured in RAM, the other one is called the hard drive this stores majority of the general data on a computer
Why does the Computer store Data
The computer has to store data so things like power point presentations and word documents don't vanish.