This book is part of a series and cannot therefore be considered in total isolation. Given the coverage suggested by the other titles listed inside, and on the assumption that they cover their ground as well as this volume does, I would say that the series as a whole would be very hard to beat.
This volume assumes nodding familiarity with the fundamentals of electronics, implied by the required ability to read basic circuit diagrams and graphs, which I suppose would be gained from reading the previous titles.
In a mere 40 pages it succeeds in clearly introducing the concepts of logic functions, Central Processing Unit (CPU) instruction words and architecture, and introducing the 6502 CPU, which, it rightly states, is 'broadly typical of current 8-bit microprocessors'.
The second half of the book covers a range of theoretical applications including analogue to digital interfaces and data transfer, and the book concludes with a brief but lucid glossary and a basic resume of Boolean algebra.
This is an excellent book for the determined enthusiast or hobbyist or for schools - I will certainly be keeping it by me as a quick reference guide.
My only beef, though, is the 'landscape' A4 format, which is definitely oversize for the rather soft and insubstantial binding.