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ＥＰＰ（ＥｎｈａｎｃｅｄＰａｒａｌｅｌＰｏｒｔ）是ＩＥＥＥ１２４８协议定义的增强型并行口。本文介绍了有关ＥＰＰ的基本知识，包括ＥＰＰ的数据传输方式、ＥＰＰＢＩＯＳ及对其调用，还介绍了利用其他连接方式进行数据采集。ＥＰＰ作为ＰＣ同外设连接方面的一种趋势，它在数据传输速率、调用协议和同外设连接方式上，都具有其明显的特点和优势。因此，ＥＰＰ在数据采集方面将会得到更多和更广泛的应用。
EPP (EnhancedParalelPort) is an enhanced parallel port defined by the IEEE1248 protocol. This article introduced the basic knowledge of EPP, including EPP data transmission method, EPPBIOS and its call, but also introduced the use of other connections for data acquisition. EPP PC as a peripheral connection with a trend, which in the data transfer rate, transfer protocol and the connection with the peripherals, has its obvious characteristics and advantages. Therefore, EPP will be more and more widely used in data collection.