theory

This book covers almost all of the information needed for A Levle.

I would recomend purchasing it in prefrance to other revisoion books.

Quite simply, this is the best general purpose computing book I have ever read. It would say it is absolute essential for A-level students, but also has an awful lot to offer anyone else, as this will act as a superb reference book for many years to come. If you are studying computing in any form, then you are doing yourself an injustice by not owning this superb book....

If you are an A level computing student, I strongly recommend you to buy this book. Most information in the book is up to date. Color printed, which can always keep you awake. Even if you feel the book not enough for you, it provides some web site for you to reinforce the book.