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Revision Guide

Chapter 1: Components of a computer system

Hardware: External/internal devices connected to a computer which can be used
with the system to complete tasks.

Input Devices: Input devices are a type of hardware which are used to input
data/information into a computer system in order for it to…

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Models:

Waterfall model: The waterfall model is the most widely recognised model to
show the systems development life-cycle as it shows every step.

Spiral model: This model is not as common as the waterfall model and shows
the stages in a more direct order where once it has been completed…

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User documentation: User documentation is the system/applications manual which
comes with the software/system. With software, it sometimes comes as a
"README" file, as a rich text format.

Technical Documentation: Technical documentation describes to the user/vendor
the handling, functionality, and architecture in detail of a technical product.

Types of software selling…

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Graphical user interface: A basic interface whereby the options available are
visible to the user on a monitor or screen so that they can easily choose what they
would like to do.

Form-based interface: A more advanced interface which uses GUI for ease of
access, but more specifically it has…

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other things you can do as well to manage your files. Without a file handler, using a
computer would be much more difficult than it is.

Back-up software: back-up software is usually already installed onto an OS
after purchase and is sometimes integrated into the file handler, it is a…

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