This book is the result of a laborious investigation into the knowledge of computers world. The beautiful illustrations of the chapters of this work are designed to get the attention of children. It is important to highlight that its chapters not only point to the child's familiarization and knowledge of the computer, but also to facilitate the acquisition of notions and concepts that constitute the necessary basis to encourage their curiosity and allow them to develop the necessary skills for learning of new technologies. The book "The Magical World of Computer" is intended for children between 6 and 12 years of age. It can be used as a book for learning how to use the computer in specific subjects or, simply, as a teaching tool outside the classroom for vacation courses or other courses whose objectives are oriented to begin in the management of this powerful tool. The book consists of ten (10) chapters, which are specified below: Chapter 1. My first steps with the computer. Chapter 2. The computer lab. Chapter 3. Knowing the monitor. Chapter 4. Knowing the keyboard. Chapter 5. Knowing the mouse. Chapter 6. Computer Accessories. Chapter 7. Knowing the Windows operating system. Chapter 8. Drawing with the Paint tool. Chapter 9. Creating Text with the WordPad tool. Chapter 10. Knowing the Internet World.The Magical World of Computers is a work that will not only catch the child but also the adult, just by looking at the didactic of its content and the magic of the illustrations. The magical world of computers, is a work that will not only capture the child's attention, but also the adult just by seeing the didactic of its content and the magic of the illustrations.