3. A computer system consists of hardware
components that have been carefully chosen so
that they work well together and software
components or programs that run in the computer.
The main software component is itself an operating
system that manages and provides services to
other programs that can be run in the computer.
4.
5. In computing, an input device is a
peripheral (piece of computer hardware
equipment) used to provide data and
control signals to an information processing
system such as a computer or information
appliance
7. A central processing unit
(CPU) is the electronic
circuitry within a computer
that carries out the
instructions of a computer
program by performing the
basic arithmetic, logical,
control and input/output
(I/O) operations specified by
the instructions.
8. Computer data storage, often
called storage or memory, is a
technology consisting of
computer components and
recording media used to retain
digital data. It is a core function
and fundamental component of
computers. The central
processing unit (CPU) of a
computer is what manipulates
data by performing
computations.
9. An output device is any piece of computer
hardware equipment used to communicate
the results of data processing carried out by
an information processing system (such as
a computer) which converts the
electronically generated information into
human-readable form.