The onboard parallelport can be easily transformed into a multitude of devices, such as discrete inputs and outputs, or to drive a set of stepper motors.
板载的并口可以很容易转换成很多设备，例如将输入和输出分离开，或者驱动一组步进马达。
2
Parallelport interface is a horrid kluge asking for trouble, and USB drives are slow.
并口接口是一种会给您添麻烦的棘手玩意儿，而US b驱动器则很慢。
3
Those investigators typically use data-acquisition techniques that rely on replicating a drive via USB or a parallelport.