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Appendix E - PC/104

Sealevel Systems SIO-104+2 Page 14

Appendix E - PC/104

What is PC/104?

The PC has become extremely popular in both general purpose (desktop) and dedicated (embedded) applications.

Unfortunately the PC has been hampered by the large size required to maintain PC compatibility. PC/104 addresses

this by optimizing the PC bus in a form factor designed for embedded applications.

Briefly, the key differences between PC/104 and the standard “AT” or ISA bus computer are as follows:

• Reducing the form factor, to 3.550 by 3.775 inches

• Eliminating the need for backplanes or card cages, through its self-stacking bus

• Minimizing component count and power consumption (typically 1-2 Watts per module) by reducing required

bus drive on most signals to 4 mA.

Sealevel Systems has been a member of the PC/104 Consortium since its inception. Also Sealevel Systems has two

members on the working group that is currently having the PC/104 bus approved by the IEEE as P996.1.

Questions about the PC/104 Consortium can be sent to:

PC/104 Consortium

P. O. Box 4303

Mountain View, CA 94040

(415) 903-8304 Ph. (415) 967-0995 Fax

www.controlled.com/pc104

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Impulse SIO-104+2 (3502) Manual de usuario Pagina 16