Page 36 - Computer
P. 36

Computer Science  Due to the advancement  of mobile
          technologies,  the palmtop  is being
          replaced  with smartphones, which
          are  even  smaller. Smartphones
          are  more  advanced  in  terms  of
        FOR ONLINE READING ONLY
          processing power, storage capacity,
          and  multitasking.  They  are  more
          convenient for personal and business
          use. Figure 2.9 shows different
          smartphones.                                     Figure 2.9: Smartphones

          Tablets
          A tablet is a mobile computer with a touchscreen display. Tablets are equipped with
          various sensors such as accelerometers, cameras and microphones, allowing one to
          use finger or stylus gestures instead of a mouse and keyboard. Some tablets contain
          physical buttons which control basic features such as volume and power. Besides,
          some tablets have ports for charging. An on-screen pop-up virtual keyboard is
          usually used for typing. Figure 2.10 shows different examples of tablet computers.
















                                     Figure 2.10: Tablet computers


         Classification based signal               and performs computations  with the
         Computers can be classified into three    help of measurements.  It can be a
         categories: analog, digital, and hybrid,   mechanical  analog  or  an  electronic
         depending on the signal they use.         analog  computer. These  computers  are
                                                   used in hospitals,  music studios, and
                                                   aircraft  for controlling  equipment. The
         Analog computers                          audio mixer is an example of an analog
         An analog computer stores data in the     computer. Figure 2.11 shows  an audio
         continuous form of physical quantities    mixer.


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