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Web Camera
                 A web camera or webcam, is a type of video camera that saves images or visuals in real time into
                 a computer via USB, Ethernet or Wi-Fi. A 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 and 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.
                                       •   MU stands for Memory Unit. It is a storage unit that holds the processed or unprocessed
                      CPU Chip           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)

                 A 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 colour.                                           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 12 to 36 pages per minute.
                         Inkjet Printer



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