Computers store information in the form of "1" and "0"s in different types of storages such as memory, hard disk, usb
drives etc. The most common digital data storage unit is byte which is 8 bits.
For your information, computer data is expressed as bytes, kilobytes, megabytes as it is in the metric system, but 1 kilobyte is 1024 bytes not 1000 bytes.
Data storage units are: bit, byte, kilobyte (kb), megabyte (mb), gigabyte (gb), terabyte (tb), petabyte and exabyte.