What is port and its types?

What is port and its types?

PORTS

techeeINDIA

Ports are used to connect external devices to the computer. These are the connecting points of various devices to the computer. There exist several types of ports like serial port, parallel port, USB port, AGP port.

1.    Serial Port: - As the name suggest, the serial port transfers data serially a bit at a time. As a result, the serial port needs only wire to transmit 8 bits. The disadvantages are that it takes 8 times longer to transmit a byte. Also, it is necessary to send a start bit before each byte of data, a stop bit after the byte to mark the end of byte and a parity bit to help check the integrity of data. Serial ports come in the form of 9-pin or 25-pin male connector. Serial ports are often known as communication (COM) ports or RS232C ports. They are typically used to connect devices like mouse and modem.

2.   Parallel Ports: - Parallel ports can send or receive a byte (8-bit) at a time. Unlike the serial port, these 8-bits are transmitted parallel to each other. Parallel ports come in the form of 25-pin female connector. Parallel ports are popularly used to connect printer, scanner, CD writer, zip drive, external hard disk drive, tape backup drive, etc.

3.   USB (Universal Serial Bus): - to spare the user botheration of 8-pin, 25-pin, male, female connectors, the USB has been designed. It gives you a single, standardized, easy-to-use way to connect a printer, scanner, mice, joystick, digital camera, web cameras, speakers, telephones, zip drives, network connections, scientific data acquisition devices, etc. The latest version of USB 3.1, offers data rates of up to 10G Bits/sec i.e., 10 Giga bits per second.

4.   AGP Ports: - The AGP (Accelerated Graphics Port) port is used to connect to graphic card that provides high-speed video performance typically required in games and other multimedia applications.

5.   InfraRed Port (IR Port): - An IR port is a port, which sends and receives infrared signals from other devices. In this special form of radio transmission, a focused ray of light in the infrared frequency spectrum, measured in terahertz, or trillions of hertz (cycles per second), is modulated with information and sent from a transmitter to a receiver over a relatively short distance. Infrared radiations (IR) is the same technology used to control a TV set with a remote control. Infrared data communication is playing an important in wireless data communication due to the popularity of laptop computers, personal digital assistants (PDAs), digital cameras, mobile telephones, pagers, and other devices. Infrared communication involves a transceiver (a combination transmitter and receiver) in both devices that communicate. Special microchips provide this capability. In addition, one or both devices may require special software so that the communication can by synchronized. IR can be also being used for somewhat longer interconnections and is a possibility for interconnections within local area networks. The maximum effective distance is somewhat less than 1.5 miles and the maximum projected bandwidth is 16 megabits per second. IR is line-of-sight light transmission, it is sensitive to fog and other atmospheric conditions.

6.   Bluetooth: - Bluetooth is a telecommunication industry specification that describes how mobile phones, computers, and personal digital assistants (PDAs) can be easily interconnected using a short-range wireless connection. Using this technology, users of cellular phones, pagers, and personal digital assistant can buy a three-in-one phone that can double as a portable phone at home or in the office, get quickly synchronized with information in a desktop or notebook computer, initiate the sending or receiving of a fax, initiate a print-out, and, in general, have all mobile and fixed computer devices be totally coordinated. Bluetooth requires that a low-cost transceiver chip be included in each device. The transceiver transmits and receives in a previously unused frequency band of 2.45 GHz that is available globally (with some variation of bandwidth in different countries). In addition to data, up to three voice channels are available. Each device has a unique 48-bit address from the IEEE 802 standard. Connections can be point-to-point or multipoint. The maximum range is 10 meters. Data can be exchange up to a rate of 3 megabit per second (in Bluetooth 4.2). It can be used even in areas with a great deal of electromagnetic interference. Built-in encryption and verification is provided.

7.   PS-2 Port: - The PS/2 standard, introduced by IBM in 1987, stands for personal system/2. A PS/2 port is an electronic receptacle or plug found on computers. It accepts a PS/2 cable with a mini-DIN connector, and is most often used to plug in a keyboard or mouse. The PS/2 port is female while the mini-DIN cable is male. The connectors are small with a diameter of about 1/3 inch (9.5mm). it features a metal sleeve that is notched to ensure proper alignment when inserting it in to the PS/2 port. This protects the circular pins inside the DIN connectors from becoming bent. DIN is short for Deutsches Institut Fiir Normung eV, THE standard -setting organization for Germany. A DIN connector is a connector that conforms to one of the many standard defined by DIN. DIN connectors are used widely in personal computers. For example, the keyboard connector for PCs is a DIN connector. A DIN connector is shown in the adjoining figure.

8.   Firewire: - firewire is Apple computers version of a standard, IEEE 1394, high performance serial bus, for connecting devices to your personal computer. Firewire provides a single plug-and-socket connection on which up to 63 devices can be attached with data transfer speeds up to 800 Mbps (megabits per second).Firewire is quite popular on audio and video devices like digital camcorders.    

-JAI HIND

What is port and its types?

BUY: - JBL C100SI in-Ear Headphones with Mic (Black)