Scientific Calculator source code

The purpose of this eBook is to provide standards knowledge of computer science base on computer systems, for school computer science students and even for personal knowledge. It will development students whose are interest to be developer and it can be used for personal knowledge in senior secondary schools and tertiary institutions.
It extensively covers the most points that are currently used.
What makes this book is very useful and unique is the style of publishing of the contents step by step instructions for easy understanding.