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3.1.1: Components of
a computer system
- Hardware
- Physical
Components of a
computer
- Peripheral Devices
- Input device
- Any device that
lets you enter data
- Allows you to supply information from an
external source to your computer to then be
processed or stored
- Any device that
lets you enter data
- Output device
- Any device that
presents output from
a computer
- An output device renders (in any
appropriate format) the data that
is held on the storage device
- Any device that
presents output from
a computer
- Storage Device
- Hardware for holding
programs or data
- A storage device holds data (for differing
lengths of time) that it has recieved from
software and input devices
- Hardware for holding
programs or data
- Hardware devices outside of the
processor, often connected via
wires.
- Input device
- Physical
Components of a
computer
- Software
- The programs that tell the
computer what to do
based on user input or an
event.
- Two important types
- Systems Software
- Instructions that make the
hardware available for use.
- Includes programs that allows
humans to interact with the computer,
programs that control the movement
of data and programs that turn human
language commands into ones that
the computer can recognise.
- Instructions that make the
hardware available for use.
- Applications packages
- A piece of software designed to carry out a
specific task that is useful for the user.
- Word processing software and
powerpoint are examples of
application packages.
- A piece of software designed to carry out a
specific task that is useful for the user.
- Systems Software
- The programs that tell the
computer what to do
based on user input or an
event.
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