I Mrs Minati Samal, a teacher of Vikash Residential School, Bhubaneswar, Odisha put best of my labour to provide this work book for the class I students. This work book regarding the basics of computer of the computer learning. I am of the strong opinion that both teachers and students will like this work book .It is written strictly in accordance with latest syllabus prescribed by CBSE. The subject matter of this book designed keeping in mind, the latest trend of questions papers. To keep the students up date, I have put my best efforts in all chapters. However I seek my apology for any omission. Keeping in view the valuable suggestions of teachers and students some new ideas have been added wherever necessary. These have been supplemented with clear self-explanatory diagrams to give the students a better understanding of the subject matter.