Computer Fundamental

Memory Unit

Computer data is in what is called binary format. This means that it is always a 0 or a 1. It only has these two states and must be in one of them.

There are several fundamental data units which include:

. Bit: A data unit which must be in one of the two binary states described above. It is the smallest data unit that exists.

. Byte: 8 bits of data which has a possible value from 0 to 255.

8 bit (1/0) : 1 Byte [1 character] 1024 bytes : 1 kilobyte 1024 KB : 1 megabyte 1024 MB : 1 Gigabyte 1024GB : 1 Terabyte.