I have already uploaded videos CHAPTER-1 INTRODUCTION TO COMPUTER https://www.youtube.com/watch?v=SFy79ZCbH4A&t=3s CHAPTER-3 INPUT AND OUTPUT DEVICES https://www.youtube.com/watch?v=vaRkkKXrwBE&t=3s CHAPTER- 2 CHARACTRISTICS AND GENERATION OF COMPUTER https://www.youtube.com/watch? v=bNkmYWMa3tM PRAGRAMMING LANGUAGES https://www.youtube.com/watch?v=XuHwhsj7SQ0&t=81s