The development of digital technology since its inception a little over fifty years ago has been extraordinary . To put it mildyl, it is now an integral part of so much of our lives. Where would we be without our computers, televisions, and telephones ! And that’s only taking a narrow view of the contribution digital technology makes to the cultures of most countries throughout the world. Very few understand the many levels of complexity of computers . Most have an operational ability to use computers and that satisfies their needs. Some people, however, may enjoy probing a little deeper into this significant aspect of our cultures and this ebook will help them to do that. So, boost your Digital know-how!