Earlier, the size of the computers was as big as the size of a large room. They used up power equal to several thousand modern personal desktop computers (PCs). In that period, use of computers was limited to military and scientific applications.

Modern computers are million times more capable than the earlier machines. They occupy a very small space and are even small enough to fit into mobile devices.

Today, a computer has become a tool that provides the information we want and is commonly being used in various areas of our lives for e.g., in banks, education sector, entertainment, healthcare, schools, homes, sports, advertising, science and engineering, railways, airports, cinema halls, government offices etc.

Learn more on how all this was possible by learning / reading this book. This book consists of explanation on topics like Development, History, Inventions, Generations, Hardware, Software, Memory, Different Devices. This book will help those who want all this information under one book. Above all this there are activity exercises at the end of every lesson. This will help students to revise.