Page 16 - ConceptGP_C7_Fb
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2.  Fill in the blanks using the words from the help box.
                                                OFF, binary, base-2 system, 12, bit

                     a.  A __________ is a smallest unit of data represented in a computer.

                     b.  The digit 0(Zero) represents the electronic state __________.
                     c.  The binary number system is also known as __________.
                     d.  In the hexadecimal number system, the letter C = __________.
                     e.  The computer system understands __________ numbers.

                  3.  Answer in one or two words.
                     a.  What is a group of eight bits called?                                          ____________

                     b.  What is the decimal number system also known as?                               ____________
                     c.  Which number system uses symbols, 0 to 9 and A to F?                           ____________

                  4.  Think and answer.
                     a.  What is an octal number system?
                      ______________________________________________________________________________________

                     b.  What do you understand by the number system? Give an example.
                      ______________________________________________________________________________________

                     c.  What do you mean by base in a number system?
                      ______________________________________________________________________________________

                     d.  How do you represent data on a computer?
                      ______________________________________________________________________________________

                      ______________________________________________________________________________________
                     e.  How can we convert a binary number into a decimal number? Give an example.

                      ______________________________________________________________________________________

                      ______________________________________________________________________________________
                     f.  Write the rules to subtract two binary numbers.

                      ______________________________________________________________________________________
                      ______________________________________________________________________________________

                  5.  Solve the following:
                     a.  Convert these into the given number system and write their results.
                         (i)  (101)  to decimal number system    __________
                                 2
                        (ii)  (250)  to binary number system    __________
                                 10
                        (iii)  (101011)  to decimal number system   __________
                                   2
                        (iv)  (10111011)  to decimal number system __________
                                     2
                     b.  Perform the following operations on binary numbers:
                         (i)  Subtract (1101)  from (100110)    ____________
                                          2             2
                        (ii)  Add (1000)  and (101) 2           ____________
                                       2


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