Through realizing PLC logic in FPGA and providing a compiler which can be used to compile PLC command to implement the sup - port of NC system to universal PLC program language.

通过在FPGA内部实现PLC逻辑，并提供能够编译PLC指令的编译器，实现了数控系统对通用PLC编程语言的支持。

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While many MFP devices still use the parallel port, there is a shift to Universal Serial Bus (USB) for the high-speed connection of peripheral devices.

也即当采用并行端口的众多多功能外设器件彼此相连时，在通用串行总线(usb)上可以实现他们的高速数据交换。

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Universal serial Bus (USB) is similar to a serial port.

通用串行总线(usb)与串行口相似。

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Its multiroom audio capabilities are similarly extensive with Powered Zone 2 and 3 capabilities, multiple DC triggers, bidirectional RS-232, and Onkyo's exclusive Universal Port for connection of an optional iPod Dock and HD Radio tuner.

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It connects to the TV through either the composite video or S-Video port, and to the PC through the Universal Serial Bus port common on most newer machines.

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Computers are commonly equipped with a USB -- universal serial bus -- port.

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