Hi friend Number systems in Computing and informatics is a very important chapter. Because to get pass marks in Computing and informatics it has vital role. As we know Number systems has a mathematics type number. So you can score 20 marks out of 20 with your right answer. Stress on this chapter to get pass mark easily. That is why i post some topic which is very important for you. I give those link in bellow, click on that, read it and if you feel you need this as a study note simple copy that post and paste in word. I think those posts will bring you 20 out of 20. And all notes are prepared by me so go for that.