Mr. Esquivel (212)
Computer Programming and Networking
Computers process data, using sets of instructions called computer programs. These programs guide computers through orderly sets of calculations and other actions that are specified by people known as computer programmers. Today's personal computer can perform billions of these calculations and actions per second. Today's fastest supercomputers work so quickly that they can perform the equivalent of 150,000 actions and calculations per second for every person on the planet.
A computer consists of various devices referred to as hardware (for example, the keyboard, screen, mouse, hard drive, memory, DVD drives and processing units). The programs that run on a computer are referred to as software (for example, applications such as word processor, payroll systems, spreadsheets, e-mail systems, games, etc.).
A computer consists of various devices referred to as hardware (for example, the keyboard, screen, mouse, hard drive, memory, DVD drives and processing units). The programs that run on a computer are referred to as software (for example, applications such as word processor, payroll systems, spreadsheets, e-mail systems, games, etc.).
A computer network is a set of computers connected together for the purpose of sharing resources. The most common resource shared today is connection to the Internet. Other shared resources can include a printer or a file server. The Internet itself can be considered a computer network. The connection between computers can be done via cabling, most commonly the Ethernet cable, or wirelessly through radio waves. Networks are classified according to their geographic coverage and size. The two most common network classifications are Local Area Networks (LANs) - restricted to a single geographic location such as an office building or a school, and Wide Area Networks (WANs) - spans more than one geographic location, connecting separate LANs.