sed1520 122* 32 dot

T9输入法， 可 以用在手机或者单片机系统中需要显示汉字的场合，节省键盘数，--T9 Chinese input method. It could be used in mobile phone or SCM systems which need to show Chinese characters.

氦浓度检测仪 氦浓度检测仪-Concentration of helium detector helium concentration detector

keil c51使用手册中文讲解-Keil decoder manual on Chinese

一个警报声程序 　　　　　　　　　　　　　　　　　 一个警报声程序-an alarm sounded a siren procedures procedures

D/A7513可以用于调试 1602显示器-D/A7513 display 1602 can be used to debug

AT45DB041B读写C51源码,带芯片资料-AT45DB041B read and write source code C51, with the chip data

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.

美国TI公司的protel 元器件库，在应用中需要更新，本人收集了最新的版本共30M，为提高上传速度分六次上传。文件名依次为TI_1到TI_6。希望大家设计电路板时少走弯路这里是TI_3-TI" s U.S. Treasury protel components, need to be updated in the application, I collected a total of up-to-date version of 30M, to improve the upload speed upload six hours. File name followed by TI_1 to TI_6. Hope that the design of circuit board is less detours here TI_3

Hidden any program , and main program can hide in taskbar.-Hidden any program

用8051实现FPGA（电路与代码）~