Networks and the Internet
-a network is collection of computers and devices connected together via communications.

The reason to networks
-Hardware devices
-To share resources
-Software programs
-Data
-Information

Local area network(LAN)
-a network that connects computers in a limited geographic area such as a school computer laboratory office or group buildings.

Categories of Computers
-Personal computers
-Mobile devices/Computers
-Mid-range computers
-Mainframes
-Supercomputers