Backplane Systems
Backplane systems use a main card with slots to plug all of the PC components into. These systems typically reside in industrial application due to the cost. There are two types of backplane systems, active and passive. The passive system has a main card with slots mounted on the card and no circuitry on the card. Each piece of the PC is mounted on its own card and then plugged into the backplane. An active backplane has some circuitry mounted on the backplane but not a CPU. The card that has the CPU mounted on it is called the processor complex. This setup allows the user to swap or upgrade components very quickly. Unfortunately, there is no standard for the cards that plug into the backplane so you are limited to what the specific manufacturer sells. The backplane systems are all rack mount and the system bus is fixed.
Full-Size AT
Backplane systems use a main card with slots to plug all of the PC components into. These systems typically reside in industrial application due to the cost. There are two types of backplane systems, active and passive. The passive system has a main card with slots mounted on the card and no circuitry on the card. Each piece of the PC is mounted on its own card and then plugged into the backplane. An active backplane has some circuitry mounted on the backplane but not a CPU. The card that has the CPU mounted on it is called the processor complex. This setup allows the user to swap or upgrade components very quickly. Unfortunately, there is no standard for the cards that plug into the backplane so you are limited to what the specific manufacturer sells. The backplane systems are all rack mount and the system bus is fixed.
Full-Size AT
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