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Dear Students,
We have uploaded Computer Science Class IX (9th) SSC-I Notes Chapter # 3 (Input / Output Devices). The notes uploaded in our section “Written Notes” have been prepared in such a way that the readers can understand them easily. These notes will really be helpful for students and they will learn from these notes without any difficulty. In this Chapter you will understand the basic concepts of some Input and Output devices of Computer. Some of the important topics in this chapter includes Mouse, Keyboard, Scanner, Monitors, Printers and Plotters.

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