Introduces a device control system design based on micro -computer parallel port, gives the concrete design method of system hardware and software according to system requirement.

介绍了基于微机并口的某设备控制系统，并根据系统要求，详细讨论了系统的硬件和软件设计方案。

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That type of design uses three parallel arms to control the print head, enabling a device that's not only "fun to watch, " according to the group, but that can also quickly print high resolution objects with a large 9-inch by 11-inch build envelope.

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