
3
Preface
The BBC Microcomputer, manufactured by Acorn Computers Limited, was commissioned by the BBC as
part of its Computer Literacy Project. As such the machine is an educational tool, which is capable of
being expanded into a very sophisticated computer with computational powers to rival those of present
day mini-computers.
As with any complex machine it makes sense to understand something of how it works, what goes where
and how to obtain the best from it. A computer is no different and a working knowledge of the internal
functions and layout will boost your confidence in computing.
This Hardware Guide delves inside the computer to reveal some of the many modifications, upgrades
and circuit changes that can be performed. Some modifications only require extra components to be
inserted whilst others require careful work with a soldering iron on the main printed circuit board. For
those who prefer only to peek inside the lid, photographs and circuit layouts have been provided to
identify the various integrated circuits and work areas on the main board. Some handy tips, such as
getting rid of that annoying buzz found on many computers, introduce the beginner to electronics
stimulating his or her interest in both spheres of activity.
For the more advanced reader, system fault finding, further expansion and the inclusion of manufacturers
data sheets and detailed descriptions of complex circuitry make this manual a necessary adjunct to the
existing publications available.
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