Patricia Harris Ph.D. 
What Are Integrated Circuits? [PDF ebook] 

In this volume, readers learn that early computers were housed in large rooms, and each individual circuit and part was separate from the others. Today, thanks to miniaturization, a whole computer system can be integrated or combined on a single chip. An X-ray of a tablet reveals that most of the case is filled with batteries. The actual computer board is much smaller than most people would imagine. This book traces the development of integrated circuits and shows what they might make possible in the near future.