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Memory Stick

                                 Memory stick is a portable memory card used as an add-on for smartphones, digital cameras,
                                 SmartTV etc. Its capacity varies from 4 GB to 128 GB.
                 Memory Stick


                      MEASURING UNIT FOR MEMORY

              The unit used to measure data stored in memory or storage devices is the byte. In computing, a byte for memory is
              equivalent to a kilometer for distance, a second for time, or a kilogram for weight.

              Computers work in binary digits—0 and 1 to form endless combinations of 8 bits (1 Byte). This byte represents a single
              letter, number, punctuation, or any other special character on the keyboard. These bytes combine in different forms
              to represent data.
              •  Bit: A bit is the smallest measuring unit. It can be either 0 (Off) or 1 (On).
              •  Byte: A byte is the basic unit for measuring units. It is made up of 8 bits.
              To represent huge data we have different units to measure as listed below:

                                       1 Byte                      8 Bits
                                       1 Kilobyte (KB)             1024 Byte
                                       1 Megabyte (MB)             1024 KB
                                       1 Gigabyte (GB)             1024 MB

                                       1 Terabyte (TB)             1024 GB
                                       1 Petabyte (PB)             1024 TB
                                       1 Exabyte (EB)              1024 PB
                                       1 Zettabyte (ZB)            1024 EB


                      PERIPHERAL DEVICE PORTS

              These ports act as a connector or a point of attachment between the external peripheral devices like mouse, printer,
              keyboard, camera, scanner, etc. and the computer. There are different types of ports present in a computer system.
              Some of the commonly used are discussed below:
              •  Serial Port: In Serial port, data transmission between the computer and the peripheral device takes place in a
                sequence of one bit at a time. It was used to connect mouse and external modems in older times. Nowadays, it is
                replaced by a USB port.
              •  Parallel Port: In Parallel port, data transmission between the computer and the peripheral device takes place in a
                parallel line of eight bits at a time. It is used to connect scanners and printers.
              •  USB Port: Universal Serial Bus is a new technology port which supports the connection of a variety of devices like
                scanners, printers, keyboard, cameras, speakers, etc. to the computer. It is much faster than serial or parallel ports.
                Smartphones, Tablets, e-book readers, use USB port for charging.
              •  Ethernet Port: Ethernet Port provides a network connection by connecting the ethernet cables to the computer for
                network and Internet connectivity using wired technology.
              •  HDMI Port: High Definition Media Interface port is used to connect high quality audio and video devices like MP3
                players, cameras, smart phones, Tablets, Smart TV to computers. It helps in the transmission of good quality audio
                and video files.
              •  Power Port: It is used to connect the system to the power supply.


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