An interface on a computer to which you can connect a device.
- Used in old Computers
- supports serial communication only
- transfers 1 bit of information in or out the port
- supports RS-232 standard
- Used to connect Printers, DialUp Modems,Old Digital Cameras, Serial Mouse
- Also known as Printer Port or Centronics Interface
- parallel communication physical interface
- Has 25 pins & supports transfer or receive 8 bits of data
- Supports IEEE1284 standard
- Used to connect Printers, Scanners,CD Burners, Eternal HDD,Network Adapters
- EPP(Enhanced Parallel Port) or ECP (Extended Capabilities Port) are the new versions of parallel ports.
- 6 pin Mini Din Connector
- Developed by IBM
- Bidirectional 8 Bit Port
- This is called as Mouse Port/Keyboard Port as it can be used to connect Mouse & Keyboard.
4.USB (Universal Serial Bus)
- USB Ports have replaced most of the previous interfaces including serial and parallel ports.
- It allows data to be transferred between devices
- It is mainly used for connection, communication and power supply between computers and electronic devices.
- A single USB supports upto 127 devices.
- Supports Plug and Play installation and hot plugging.
- USB Hub is a device which allows connection of multiple devices to the USB.
- USB3.0 can transfer data upto 5GB/sec almost 10 times faster than USB2.0(480MBits).
- Mouse,Keyboard,Printer,Scanner,Mobiles,Card Readers,Webcams,External HDD are the commonly used devices which can be connected to the system using USBs.
- Used to send and receive data using infrared light.
- Uses irDA(infrared Data Association) protocol for data transfer.
- irDA is a group of hardware manufacturers working together to create standards for infrared data transmission.
- These are present in Laptops, Cell Phones and PDAs.
- They are most commonly used in the Remote Controls of Televisions,DVDs etc.
- Short range radio frequencies are used for data transmission between devices.
- It is mainly wireless interface and supports upto 10 meters for better usage.
- Bluejacking is a process of sending data to unknown user using Bluetooth wireless technology.
- Mobiles,Headsets,Mouse,Keyboard,Printer are few devices compatible with bluetooth technology.
- Also known as Separate Video port.
- Generally connected using a cable with 4 pin mini DIN connectors.
- Commonly found in DVD Players,computer video cards/graphic cards,projectors etc.
8.DVI Monitor Port
- Known as Digital Visual Interface
- Developed by Digital Display Working Group(DDWG) to replace VGA Connector standard.
- DVI is designed to carry uncompressed digital video to display.
- It is partially compatible with HDMI in Digital Mode 9DVI-D) and VGA in analog mode (DVI-A).
- Mostly used in Desktop PCs and Monitors.
- Many other devices support DVI indirectly through HDMI.
9.High Definition Multimedia Interface (HDMI)
- It is the industry-supported,uncompressed, all-digital audio/video interface.
- Complete digital Audio & video is delivered through a single cable.
- HDMI implements the EIA/CEA-861 standards
- HDMI carries almost 5Gbps bandwidth of data at a time.
- HDMI supports standard video formats.
- Also backward compatible with DVI.
- HDMI 1.3 can transport Dolby Digital Plus, Dolby TrueHD, and DTS-HD Master Audio bitstreams in compressed form.
- The HDMI Founders are Hitachi, Matsushita Electric Industrial (Panasonic/National/Quasar), Philips, Silicon Image, Sony, Thomson (RCA) and Toshiba.
- HDMI ports can be found on
- DVD players and recorders
- Set top boxes, e.g. Sky Plus HD
- PCs and laptops
- Games consoles
- Digital camcorder