说明：  ZLG基于EASYARM2131的详细资料深入浅出ARM7－LPC213x_214x(上).pdf和深入浅出ARM7－LPC213x_214x(下).pdf.对LPC2131的硬件结构及片内外设用法作了详细介绍
(ZLG based on detailed information EASYARM2131 easy ARM7-LPC213x_214x (on). Pdf and easy ARM7-LPC213x_214x (under). Pdf. On the hardware structure and LPC2131 chip peripherals usage detail)