自己现在用的51系列单片机下载线，用74HC244芯片

BTF020实验程序-1 btf020开发板自带-Experimental procedures BTF020 development board comes with-1 btf020

C51 Timer 0 的使用 Timer_0_mode_0_timer_gate_hard -C51 Timer 0 use Timer_0_mode_0_timer_gate_hard

按键扫描 51单片机加8279 8279通过74LS 138译码器扩展4×4键盘、6位显示器。 由3-8译码器对SL0～SL2译出键扫描线，由另一3-8译码器译出显示器的位扫描线，并采用了编码扫描方式。 为了防止出现重键现象，扫描输出线高位SL3不参加键扫描译码。CPU对8279的监视采用了查询方式，故8279的中断请求信号IRQ悬空未用。 -Scan button 82,798,279 plus 51 single-chip decoder 74LS 138 through the expansion of 4 × 4 keyboard, the display 6. From 3-8 decoder SL0 ~ SL2 translated to the key scanning line, by another 3-8 decoder translated display scan line, and uses code scanning. In order to prevent the emergence of the phenomenon of re-key, scan the output line does not take part in high level SL3 scan decoding keys. CPU on the 8279 surveillance using the query mode, the 8279 interrupt request signal IRQ left unused.

12" LCD iniotial +SSD1289IC-12" LCD iniotial+SSD1289IC

8*8led屏全方位移动，希望觉得好的就请多加分数给我，-8* 8led full-screen mobile, want to feel good, please give me more points, thank you

单片机读写E2P程序 利用单片机和2402连接,向2402内写入一串数据,单片机通过按键来将写入的数据读出来 用LED显示-E2P procedures to read and write single-chip single-chip computer and 2402 connected to 2402 with a string of data to write, microcontroller through the keys to write the data will be read out with LED display

320x240图形液晶驱动 1602液晶显示 44780字符液晶屏驱动演示程序总线方式 M12864汉字液晶显示驱动程序-320x240 graphic LCD driver LCD 1602 LCD 44780 characters Bus Driver demo program M12864 characters liquid crystal display driver

240128液晶驱动的测试程序，c语言编写-240,128 LCD driver test procedures, c language

基于电话网络的远程监测系统 附原理图及PCB图-Telephone network-based remote monitoring system attached schematic diagram and PCB

12位LED的万年历.有源程序和HEX,还有原理图电子时钟日历LED程序-12 LED