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    21 st   #Critical Thinking
                      8.  Competency-based/Application-based questions.                            Century   #Information Literacy
                                                                                                     Skills
                         a.   Nilay wants to convert a decimal number into binary. Which steps should he follow for this?

                         b.   Devika is designing a webpage and encounters the colour code #0000FF for the colour Blue. She is
                            curious about the number system used for such colour codes in HTML. In this context, which number
                            system is being used and what is its significance in HTML?
                         c.   Aarav presses the power button of his computer and sees the screen light up. His teacher explains
                            that computers understand only two electronic states. Which binary digit represents the On state of
                            a computer?

                         d.   Arjun creates a secret code using only the digits 0 and 1, such as 1011, in his computer project. Which
                            number system is he using and what is its base?

                         e.   While designing a webpage, Sneha uses the colour code #FF0000 to show red colour. Which number
                            system is used for such colour codes and why do programmers prefer using it?

                                                                                                    21 st
                         LAB ACTIVITY                                                             Century   #Technology Literacy
                                                                                                    Skills

                          a.   When you visit the computer lab, note the sizes of the following and then convert them into
                             different number systems as mentioned.

                                 Find out the size of the RAM of the computer you are working on and then convert this decimal
                               number into Binary Number System.

                                 Open any folder containing word, PowerPoint or image file on the computer and note down
                               their sizes. Now convert them into Binary Number System.
                          b.  Answer the following questions and then make the conversions accordingly.
                                What is the capacity of your pen drive? Convert it into Binary Number System.
                                Convert your current age into Binary Number System.

                         FOR THE TEACHER
                        1.  Give a brief on decimal and binary number systems.

                        2.  Do a detailed walk-through of octal and hexadecimal number systems and their operations.

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