Page 11 - iPrime_V2.2_class7
P. 11

Universal Serial Bus (USB) Port: It is also known as standard connection interface, it is
                   used to connect USB devices and supply them with power. It is commonly used for connecting
                   devices like mouse and keyboard to the computer.

                    Ethernet Port: This port connects the network cable to the computer, providing Internet and
                   network access.
                    VGA Port: The Video Graphics Array (VGA) port connects monitors using analog video signals.
                   It has holes that correspond to the pins on the VGA connector. VGA is known for lower image
                   quality compared to modern digital connections.
                    HDMI Port:  The  High-Definition  Multimedia  Interface  (HDMI)  port  connects  devices  with
                   high-definition video and audio signals. It supports digital signals, offering superior image
                   and sound quality compared to analog ports like VGA.

                    Serial Port: It is also called a communication port, it transfers data one bit at a time in a
                   sequence. It uses pins to connect to the computer and was commonly used for connecting
                   modems.
                    Parallel Port: It is similar to a serial port, but instead of transferring data one bit at a time, it
                   transfers multiple bits simultaneously. Parallel ports are used for connecting devices that need
                   high-speed data transfer, such as printers.

                    PS/2 Port: It was used for connecting keyboard and mouse but has largely been replaced by
                   USB ports.
                    Audio Port: This port connects external audio devices such as speakers, headphones, and
                   microphones to the computer.
                 Modem

                 It  stands for  MODULATOR–DEMODULATOR.  It
                 allows a computer to send and receive data over
                 a telephone line. It converts data from digital to
                 analog and vice versa. The process of converting
                 digital  signals to  analog  signals is called
                 modulation. The process  of converting  analog
                                                                            Internal Modem         External Modem
                 signals to digital signals is called demodulation.
                 Modems are of two types: internal and external.  The internal modem is located inside the CPU
                 box, typically mounted on the motherboard. On the other hand, an external modem is a separate
                 device that you can connect to the computer with the help of a USB port. It generally contains
                 indicators in the form of small lights.
                 Sound Card

                 Sound card is located inside the CPU box and is used to convert sound
                 into digital data and vice-versa. It allows the computer to play music
                 through an output device, such as a speaker. It has audio ports through
                 which we can connect speakers and headphones to the computer.
                                                                                                     Sound Card





                                                                              Computer—Hardware Components          9
   6   7   8   9   10   11   12   13   14   15   16