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Web Camera

              A web camera or webcam is a type of video camera that saves images or visuals in realtime into
              a computer via USB, Ethernet or Wi-Fi.
              Web camera is used to create video links and helps us to set up authentic video conference
              stations. Some built-in webcams can be remotely activated from far-off locations. Webcams can
              also be used for security & surveillance purposes by monitoring the captured visuals.
                                                                                                          Web Camera
                       Processing Device—Central Processing Unit (CPU)

              After taking the input from the input devices, the information is sent for processing. The computer uses its brain
              to process the information. The computer’s brain is called the CPU or Central Processing Unit. CPU is basically
              divided into three parts:
                                       •  ALU stands for Arithmetic Logic Unit. It is responsible for all arithmetical and logical
                                       calculations.
                                       •  CU stands for Control Unit. It controls the flow of information in the system. The control
                                       unit is responsible for the flow of data from input devices to the processing unit and
                                       then to the output devices. It works like a traffic policeman who controls the traffic on
                                       the road.
                    CPU Chip           •  MU stands for Memory Unit. It is a storage unit that holds the processed or unprocessed data.


                       Output Devices

              An output device is a physical component that converts the processed data or information into a human readable format.

              Some of the commonly used output devices are:

              Monitor (Visual Display Unit)

              Monitor is a standard output device that is similar to a television screen. It is also
              known as Visual Display Unit (VDU) or console. An input from any input device such
              as a keyboard can be seen on the screen simultaneously. There are different types of
              monitors available in the market depending on the size and color.                          Monitor
              These days the most widely used monitors in computers, tablets, smartphones, Smart TV, etc. are LCD (Liquid Crystal
              Display). Its screen is made up of smaller elements called pixels. Resolution of any display unit is the number of
              horizontal and vertical pixels. A higher resolution provides a smoother, sharper, and clearer image.


              Printer
              A printer is an output device that is used to get the output on a physical medium like paper. The output on the
              screen is called a soft copy whereas the output from the printer is called a hard copy. It can be used to print both
              text and graphics. The two most common types of printers used these days are inkjet and laser printers.

                                             Inkjet Printer

                                             Inkjet printers are also called photo printers. They are used to print both in coloured
                                             or black & white format for home or small business purposes. The speed of an
                                             inkjet printer is measured by the number of Pages Per Minute (PPM). Mostly
                                             inkjet printers print from 12 to 36 pages per minute.
                      Inkjet Printer

                    82      Touchpad Artificial Intelligence (Ver. 3.0)-IX
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