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Pen Drive

                       A pen drive is a small, portable data storage device that uses flash memory
                    and is integrated with a USB (Universal Serial Bus) connector. It is a small,
                    portable  storage device that can be easily  carried in a pocket or on a
                    keychain. It connects to any computer or device with a USB port. Flash
                    drives have different storage sizes, from a few megabytes to over 1 terabyte.
                                        Memory Card: It is commonly known as a multimedia memory card. It is
                                      very small in size, usually 1–1.5 inches. These are used in mobile phones and
                                      digital cameras. You need to have a card reader to read the data stored on
                                      the memory card.

                 Measuring Unit for Memory                                         8 bits         1 Byte

                 The basic unit for measuring the memory of a computer is          1024 Bytes     1 KiloByte(KB)
                 byte. A byte consists of a group of eight bits, for example,
                                                                                   1024 KB        1 MegaByte(MB)
                 10001011, i.e., 1 byte equals 8 bits. A group  of 4 bits is
                                                                                   1024 MB        1 GigaByte(GB)
                 known as a nibble (half a byte), for example, 1001 i.e., 1
                 nibble equals 4 bits or 10101011 is 2 nibbles equal to 1 Byte.    1024 GB        1 TeraByte(TB)
                 To represent huge data, we have different units to measure,       1024 TB        1 PetaByte(PB)
                 as listed below:                                                  1024 PB        1 ExaByte(EB)
                 Software                                                          1024 EB        1 ZettaByte(ZB)

                 It is a set of instructions given to a computer to perform tasks. For example, in a mobile phone,
                 the device is the hardware, and the apps installed are the software. Computer software is broadly
                 classified as system software and application software.
                 System Software

                 System software controls the functions of a computer, acting as an intermediary between hardware
                 and  user  applications.  It manages hardware  resources and  ensures smooth communication
                 between components. The main types of system software are Operating Systems, Device Drivers,
                 and Utility Software.
                    Operating Systems: The operating  system acts as an intermediary  between  users and
                    computer hardware, ensuring smooth communication and coordination of system resources
                    like the CPU, memory, storage, input/output devices, and network connections. Examples
                    include Windows, macOS, Linux, Unix, Android, and Ubuntu.






















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