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Digital Camera
              Digital Camera captures the image or picture momentarily and converts the image
              directly into digital form and stores it in memory. It can then be viewed on the computer
              or compatible devices. It is available in various models with different specifications that
              include pixels, sizes and memory. The quality of the image captured by a digital camera
              is measured in pixels. Digital photo frame is a thin coloured screen in the form of a
              picture frame. It can store photographs/images in its memory in the digital format and can be used for slide
              show presentations.

                            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. Webcams are typically connected to a computer
                            via a USB port and are commonly used for video conferencing, online meetings, live streaming,
                            and video chatting. 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.

              Output Devices

              There are various types of output devices. Let’s learn about some of them.
              Printer

              Printer  is a  common output  device  that  is used for  the  purpose  of printing
              documents. Printer generates a hard copy of data or information.

              Characteristics of printers are as follows:
               Quality  of  Printing: The quality of output  produced by the printer can be
                 measured in units of dpi (dots per inch) which is also termed resolution.
               Speed: The speed of different types of printers varies widely. The speed of a printer is measured in cps
                 (characters per second), ppm (pages per minute) or lpm (lines per minute).

               Printing Mechanism: There are different types of mechanisms that are applied in different types of printers.
                 Some printers print by striking the printer head on the paper, some print by forming images on the paper,
                 some print by spraying ink, etc.
              Based on the mechanism, printers can be broadly classified into two categories:
               Impact Printer: Impact printer prints the contents by striking the printer head or needle, on an ink ribbon
                 that rolls through the cartridge to make a mark on the paper.

               Non-Impact Printer: Non-Impact printer prints the output without touching or striking the ribbon on
                 paper or the film. This kind of printer prints by using thermal, chemical, electrostatic, laser beam or inkjet
                 technology. Usually, non-impact printer has greater resolution and is faster as compared to impact printer.
              Plotter

              Plotter is an output device that helps in printing high-quality posters, flexes, visuals,
              charts, graphs, tables and diagrams, etc. It can draw continuous lines and can produce
              output on paper, polyester film or coloured transparencies. In the plotter, the figures
              are drawn by an electronic pen which is driven by a motor. It uses inkjet cartridges
              (single or multicoloured) to spray colours for drawing and sketching.
              Plotter  is mostly used in CAD (Computer  Aided  Design),  CAM (Computer  Aided  Manufacturing)  and  for
              printing banner and DTP (Desktop Publishing) flexes.



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