The MT6225 is a highly integrated single chip solution for GSM/GPRS phone. Based on 32-bit ARM7EJ-STM RISC processor, MT6225 features not only high performance GPRS Class 12 MODEM but is also designed with support for the wireless multi-media

用于16*64的led点阵屏，既有静态显示，又有动态显示，从基本驱动写起，是led点阵屏入门的好程序。-It is used on 16*64 points LED.It inclueds both dynamic and static display.It is helpful for green hand.

The DS12887 Real Time Clock plus RAM is designed to be a direct replacement for the DS1287. The DS12887 is identical in form, fit, and function to the DS1287, and has an additional 64 bytes of general purpose RAM. Access to this additional RAM sp

The method of multiplying the 64-bit numbers in 16-bit processor