A computer system
A computer system is a collection of components that work
together to process do.
The purpose of a computer system is to make it as easy as
possible for you to use computer to solve problems. A functioning computer
system combines hardware elements with software elements.
The hardware elements are the mechanical device,
the system, the machinery and the electronics. The software elements are
the programs written for the system. Collectively these components provide a
complete computer system.
Usually, a computer system requires three basic hardware
items: the central processor unit, which performs all data processing; a
terminal device, which helps users to communicate with their computer
system and a memory storing programs and data. These three devices are
the required hardware components of any computer system. Computer system includes
many other devices: printer, scanner and a modem. These computer devices called
A set of instructions telling a computer what to do is a
Programs are usually written in a Programming languages
like Pascal, C++, etc, they (programs) deal with are organized into files.
Applications are programs for specific tasks.
Applications include: database soft, spreadsheets
calculations, word-processing on a word processor. To function hardware and
software, a computer needs an operation system program.
Some operation systems require users to type in commands
to tell the computer the to do.
Many computers use a graphical interface or
point-and-click interface such as Windows.
Some interfaces allow plug-and-play, the possibility of
connecting new hardware the computer without having to adjust or configure the
system to take the new hardware into account: the interface program recognizes
the hardware automatically.