求翻译：软件设计部分详细介绍了CAN通讯的定制和其驱动程序的设计，IAP程序设计以及步进电机驱动程序的设计。这其中CAN的通讯定制以及驱动程序设计是本课题的关键技术，因此重点介绍。是什么意思？

Software design details can communication, customization and driver design, the iap program design as well as stepper motor driver design. Communication which can customize and driver design is the key technology of this topic, so the highlights.

Some of the detailed software design CAN introduced the custom of communication and the driver of the design, programming and IAP stepper motor driver design. This custom, as well as the communication CAN driver design is a key technology of this topic, thus the emphasis.

The software design part introduced in detail CAN communication having custom-made with its driver design, the IAP programming as well as step-by-steps the motor-driven procedure design.This CAN communication has custom-made as well as the driver design is this topic key technologies, therefore key

Software design section describes in detail the customization and driver design of CAN communication, IAP program as well as the design of stepping motor driver. Communication that CAN custom design is the key to this issue, as well as driver technology, focus.

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