多位的加减运算，允许有负数.

字母小到大---汇编-alphabetical small to large compilation

好东西,自己看,要慢慢品味,适用于学生搞各种设计,有立体效果,效果特棒-good things, look, taste slowly, the students engage in various design, and three-dimensional effects, special effects wand

利用LS273译码器并结合8255a和8259编写的电梯控制器程序-Use LS273 decoder 8255a and 8259 prepared in conjunction with the elevator control program

利用DS18B20温度传感器+AT89C51控制直流电机转速，-The use of DS18B20 temperature sensor+ AT89C51 control DC motor speed,

该程序时是用12864液晶显示4*4矩阵键盘的按键值的，键盘按键值采用啄行扫描法扫描按键值。将按键值返回单片机，再通过12864液晶字符显示显示出来

code 2864 for reference

用C51实现多个舵机的分时复用控制:在KELI CX51采用混合编程用一个字节的位移实现.-C51 realize a number of steering gear with the time-sharing multiplex control: KELI CX51 in the use of mixed language programming with a byte displacement realize.

基于DSP2407的快速傅里叶变换程序，来源合众达DSP例程-fast fourier transform BASED ON DSP

压力采集程序，能够通过外接传感器来测量显示压力并做处理-Pressure acquisition program can be displayed by external sensors to measure pressure and to do deal with

一个小男孩跑步的源程序！-a small boy running of the source!