Data are stored in a computer as binary digits, or bits . If a binary number consists of n positions, it is said to be an n-bit number. Eight consecutive bits is called a byte . Therefore, a binary number of 16 bits has 2 bytes, a binary number of 32 bits has 4 bytes, and so on. Each location in a memory is assigned a unique numeric address , by which the location is accessed.
Data stored in each memory location consists of a fixed number of bits.
It stores and manages data and controls the sequence of the software and hardware actions. When the user requests that a program run, the operating system loads the program into the computer's memory and runs it. Networks Computers can communicate with other computers through a network to exchange data and share software and hardware resources. The server stores and manages programs and data. Computers can connect to these networks to use facilities in another city or country.