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What is PC/104?

PC/104 is a compact format for data acquisition and control. PC/104 modules are essentially ISA Bus cards, repackaged into a 3.8" x 3.9" format. The bus used for PC/104 is the ISA bus specified by IEEE-P996, with a few minor changes, such as: self-stacking bus, which eliminates expensive backplane pin and socket bus connectors, for improved reliability reduced bus drive (4mA) to minimize circuitry and power consumption

PC/104 modules are available offering a range of functions including: Complete PC-compatible motherboards Analog and Digital I/O Video: VGA, LCD, EL, Frame Grabbers Networks: Ethernet, CAN bus, ARCNET Drive controllers: FDD, IDE HDD, SCSI

The PC/104, PC/104-Plus and PCI-104 standards are described in specifications published by the PC/104 consortium:

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What is ISA Bus?

ISA Bus is the name for plug-in (slot) cards compatible with the original IBM PC/XT and newer AT computers. ISA Bus cards are the most widely used data acquisition and control boards available. The specifications for ISA Bus cards are set forth in IEEE-P996. The specification allows two types of cards, XT (8-bit) and AT (16-bit).

ISA Bus cards are available with a wide range of functions:

  • Analog I/O
  • Digital I/O
  • Digital Signal Processors
  • Video
  • Networks
  • Motherboards
  • Drive controllers

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