COMPUTER SYSTEM = HARDWARE + SOFTWARE +DATA+USER
A complete computer system consists of four
parts.
Hardware
Software
Data
User
Hardware
Hardware is any part of the computer we can
touch .A computer’s hardware consists of interconnected electronic devices that
we can use to control the computer’s operation, input, and output. (The generic
term device refers to any piece of hardware.)
Software
Software is a set of instructions that makes
the computer perform tasks. In other words, software tells the computer what to
do. (The term program refers to any piece of software.) Some programs exist
primarily for the computer's use to help it perform tasks and manage its own
resources. Other types of programs exist for the user, enabling him or her to
perform tasks such as creating documents. (Thousands of different software
programs are available for use on personal computers)
Data
Data consist of individual facts or pieces
of information that by themselves may not make much sense to a person. A
computer’s primary job is to process these tiny pieces of data in various ways,
converting them into useful information.
Users
People are the computer operators, also
known as users. It can be argued that some computer systems are complete
without a person’s involvement; however, no computer is totally autonomous.
Even if a computer can do its job without a person sitting in front of it,
people still design, build, program, and repair computer systems.
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