The computer is the great technological and scientific innovation of the last half of the twentieth century. It has revolutionized how we organize information, how we communicate with each other, and even the way that we think about the human mind. Computers have eased the drudgery of such tasks as calculating sums and clerical work, making them both more bearable and more efficient. The computer has become ubiquitous in many aspects of business, recreation, and everyday life, and the trend is that they are becoming both more powerful and easier to use. provides an accessible overview of this ever changing technology, giving students and lay readers an understanding of the complete scope of its history from ancient times to the present day. The volume includes a glossary of terms, a timeline of important events, and a selected bibliography of useful resources for further information.