针对at91系列的arm的启动代码的编写有一个整体的说明，有其范例。-at91 series against the arm of the activation code to prepare a comprehensive account, its example.

AT91 ARM在医疗行业中的应用pdf-AT91 ARM in the medical industry pdf

This Application Note describes programming techniques implemented on the AT91 ARM-based microcontroller for scanning a 4x4 Keyboard matrix usually found in both consumer and industrial applications for numeric data entry.