Sunday, August 10, 2014


Meaning
Date
Speed (Transfer Rate)
Range
HDMI







High Definition Media Interface




2003




from 4.95Gbps to 10.2Gbps




480p to 1080p and beyond
WIFI






Wireless Fidelity




1997




11 Mbps or greater




20-50m away
Bluetooth



*Bluetooth® technology is the global wireless standard enabling, convenient, secure connectivity for an expanding range of devices and services. It is an essential element for bringing everyday objects into the connected world.

*Created by Ericsson in 1994. In 1994 a group of engineers at Ericsson, a Swedish company, invented a wireless communication technology, later called Bluetooth. In 1998, the original group of Promoter companies—Ericsson, Intel, Nokia, Toshiba and IBM—came together to form the Bluetooth Special Interest Group (SIG). Since no single company owns the technology, the SIG member companies work together to preserve, educate, and further Bluetooth technology as a means to bring devices into the connected world.

1994

2.4 to 2.485 GHz

100 meters (328 feet)
USB

*1994 when the seven giant companies agreed to develop the usb technology. The seven big companies are: Inter, NEC, Nortel, Compaq, DEC, IBM and of course, the Microsoft.

*USB 1.0-first usb version


*USB 1.1- second usb version

*USB 2.0

*USB 3.0



1994







1996


1998


2000

2008








1.5 Mbit/s (megabits per second)

12 Mbit/s


480 Mbit/s

5 Gbit/s

FIREWIRE

*FireWire is Apple Computer's version of a standard, IEEE 1394, High Performance Serial Bus, for connecting devices to your personal computer.



1995

400 Mbps(megabits per second)

far away as 72 meters from the computer
INFRARED


*Infrared technology allows computing devices to communicate via short-range wireless signals. With infrared, computers can transfer files and other digital data bidirectionally. The infrared transmission technology used in computers is similar to that used in consumer product remote control units.

1800


*IrDA-SIR (slow speed) infrared supporting data rates up to 115 Kbps
*IrDA-MIR (medium speed) infrared supporting data rates up to 1.15 Mbps
*IrDA-FIR (fast speed) infrared supporting data rates up to 4 Mbps





within a few feet (no more than 5 meters)
FIBER OPTIC

*Fiber optic (or "optical fiber") refers to the medium and the technology associated with the transmission of information as light impulses along a glass or plastic wire or fiber.



1854

more than 100Gbps.

10km or more for single mode fibre, or 2km or more for multi mode fibre.
UTP


*Unshielded twisted-pair (UTP) consists of four pairs of thin, copper wires covered in color-coded plastic insulation that are twisted together. The wire pairs are then covered with a plastic outer jacket. The connector used on a UTP cable is called a Registered Jack 45 (RJ-45) connector. UTP cables are of small diameter and it doesn’t need grounding.

1881

Category 1: Voice Only
Category 2: 4 Mbps
Category 3: 10 Mbps
Category 4: 16 Mbps
Category 5: 100 Mbps
Category 5e: 1 Gbps
Category 6: 1/10 Gbps














100 meters, about 328 feet.
COAXIAL

*Coaxial cable is used as a transmission line for radio frequency signals, in applications such as connecting radio transmitters and receivers with their antennas, computer network (Internet) connections, and distributing cable televisionsignals
1880
10Base2 - thin coaxial cable(called Thinnetor CheaperNet) - (resistance) is 50 ohms.

10Base5 - thick coaxial cable (Thicknet orThick Ethernet and also calledYellow Cable, because of its yellow color - by convention) -50 ohm impedance -10 Mbps
185 metres without line loss.




500 meters without line loss