Page 32 - Computer Science Class 11 Without Functions
P. 32

9.  Which of the following is an example of application software?
              a. Disk defragmenter     b. Microsoft Windows   c. Apache Open Office   d. Antivirus
        B.  State whether the following statements are True or False:
           1.  A computer consists of only peripheral devices.                                         __________
           2.  The CPU consists of CU, ALU, and memory registers.                                      __________
           3.  Every computer has an operating system.                                                 __________
           4.  A backup utility is an example of application software.                                 __________
           5.  A microphone is an output device.                                                       __________
           6.  Assembler is a type of language processor.                                              __________
           7.  RAM can be used to read and write data permanently.                                     __________
           8.  A DVD is an example of secondary memory.                                                __________
           9.  The expanded form of CU is Central Unit.                                                __________
        C.  Fill in the blanks.
           1.  ____________ are the programs that make the hardware of the computer functional.
           2.  The two types of primary memory are ____________ and ____________.
           3.  Software used to backup data stored on your computer is an example of  ____________ software.
           4.  The smallest unit of memory is ____________.
           5.  The most popular unit used to express the size of memory is ____________.
           6.  A pen drive is often connected to a personal computer using ____________ port.
           7.  Software that manages and controls the overall functioning of a computer is called ____________.
           8.  A  ____________  is  an  input  device  that  scans  the  physical  characteristics  of  human  beings,  such  as  fingerprints
              and eyes.

        D.  Answer the following questions:
           1.  What is a computer?
           2.  "Both hardware and software contribute to the functioning of a computer." Comment.
           3.  Name the components of a computer system.
           4.  How is a light pen different from a mouse?
           5.  What is the use of a bar code reader?
           6.  Draw the diagram of a computer's CPU. Also, give the function of each component of the CPU.
           7.  Give any two applications of a biometric sensor.
           8.  Convert the following:
              (i)  1 GB =____________KB
              (ii)  1 YB =____________GB
              (iii)  1 KB = _____________TB
              (iv)  1 PB = ______________MB
           9.  Differentiate between:
              (i)  Primary memory and secondary memory
              (ii)  System software and application software
              (iii)  Open source software and proprietary software
          10.  Define a bus. Also, name three types of bus.
          11.  Enumerate the functions of an operating system. Also, give brief details of each.
          12.  Name any three types of user interfaces.








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