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利用ＩＢＭ－ＰＣ机并行打印端口通过软硬件方法实现数据采集，硬件结构以“ＡＤ７５４Ａ”１２位ＡＤＣ和８２５５Ａ－５并行接口芯片为主，软件通过“查询方法”实现数据采集。本系统在不打开主机箱情况下，可与不同品牌的计算机相联，特别适合于便携式计算机。
Data acquisition is realized by hardware and software using IBM-PC parallel printer port. The hardware structure is based on “AD754A” 12-bit ADC and 8255A-5 parallel interface chip, and the software realizes data collection through “query method”. The system does not open the case of the main box, can be associated with different brands of computers, especially suitable for portable computers.