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In today's video we are going to understand about different Cables and Ports available for Computer Hardware use in today's IT field. While purchasing any cable or port we should have idea about its use and quality.
- Ports :-
• Computer Ports are connection points or interfaces with other peripheral devices. There are two main type of computer ports :
&, Serial Ports
• Other types are also there like PS2, SCSI etc...
- Parallel Port :
• Parallel Ports is used for data transfer between a computer and a peripheral device through a 25 or 36 pin connector.
• In parallel communication multiple bits are transferred at a time.
• By using the IEEE 1284 standard the parallel port becomes a bi-directional data getaway can be used for transferring and receiving data packages.
• The parallel port speed can range form 50 Kbps to 150 Kbps and can go up to 2 Mbps.
• The 2 Mbps speed is achieved when the EPP and ECP modes are used as a 32 or 16 bit transfer interface who uses a 8 bit IN/OUT hardware.
- Serial Port :
• Serial port is a electronic communication gateway used for transferring data one bit at a time.
• Together with Parallel port the serial port was used almost for all types of information transfer between a computer and other peripheral devices.
• Today the Serial ports has been replaced with dedicated ports like USB Port (used for data transfer and communication between a computer and other devices), VGA Port (video Graphic Array), Ethernet Port or internet port (used for network communication any type of information).
- PS2 Port (Personal System) :
• The PS2 port is used for connecting keyboard and mice to a PC. This standard was introduced in 1987 by IBM with main purpose of replacing the serial keyboard and mouse.
• Pins of the PS2 Port & their functions (Personal System) are as follows :
Pin 1 : Data
Pin 2 : Not Connected
Pin 3 : Ground
Pin 4 : VDC +5v at 275 mA
Pin 5 : Clock
Pin 6 : Not Connected
- USB Port :
• USB port (Universal Serial Bus) is the most used connection point for data transfer in the world.
• It was created in the mid-1990s with the intention of replacing all other PC ports like Serial port, parallel port, PS/2 port.
• A standard USB connector is a simple socket with 4 pins :
Pin 1 : Power (VCC +5v)
Pin 2 : Data transfer (DATA -)
Pin 3 : Data transfer (DATA +)
Pin 4 : Ground (GND)
- Fire Wire Port :
• Fire Wire port or IEEE 1394 was firs developed in 1990 by Apple and worked as a serial bus interface for high speed data transfer. The standard was first introduced on computers in 2000 and became the main data connection port for apple.
• Fire Wire IEEE 1394 port supports the following operating system: Mac OS 8.6, 9, Mac OS X, Microsoft Windows, Haiku, Linux, FreeBSD and NetBSD.
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