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There are many different versions of both.

The Related Link explains something of this interface and gives a number of other useful links.

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14y ago
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10y ago

The "b" version was released later and uses a 9-circuit plug for increased transfer speeds. Version "a" is a little older, but "b" can be backwards compatible with the "a" interface.

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12y ago

Alpha and Beta maybe?

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Q: What is the difference between IEEE 1394a and IEEE 1394b?
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Related questions

What are the two versions of IEEE 1394?

Helo.They are 1394a &1394b. Max speed in 1394a is 400Mb/s، but max spee in 1394bis 800Mb/s.


What are Apple Computers inputs?

All modern Apple Mac computers come standard with USB 2.0, Firewire (IEEE 1394a, and in some models also IEEE 1394b), and digital audio input ports.


What hardware conforms to IEEE 1394b?

usb2.0


What are data rate transfer for 1394b?

IEEE 1394b can transfer at a maximum rate of 786.432 Mbit/s.


How many pins are used in the IEEE 1394?

1394 Cables have 9 pins on one end and 4 pin or 6 pin connector at the other end to connect a 1394a device to a 1394b computer port to run at a slower speed.


What is the maximum data supported by the IEEE 1394a standard?

400 mbps.. that's all.


What IEEE standard use cables up to 100 meters or 328 feet and uses a 9-pin rectangular connector?

The IEEE 1394b.


Which interface is most suitable for high-end audio and video devices?

IEEE 1394b FireWire


Supports speeds up to 400 Mbps and is sometimes called FireWire 400?

IEEE 1394a


Which type of cable standard uses a 9-pin connector and supports data rates in excess of 800mbps?

IEEE 1394b


How many pins are used in the IEEE 1394 connector that supports the IEEE 1394b standard?

9-pins 9 pins at one end and 4 or 6 at the other. (pg. 407)


Difference between real time project and IEEE project?

no difference