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3c509型网卡是3COM公司推出的Ether Link Ⅲ型LAN适配器。它使用固化在存储器中的专用处理程序,通过并行数据总线与计算机之间进行数据交换,并通过串行网络电缆发送和接收数据。在处理接口到计算机和接口到电缆的数据时,它会重新安排并缓冲数据。
3c509-type card is 3COM company’s Ether Link Ⅲ LAN adapter. It uses a dedicated handler stored in memory that exchanges data with a computer over a parallel data bus and sends and receives data over a serial network cable. When processing data that interfaces to the computer and the interface to the cable, it reschedules and buffers the data.