单片机上网技术，是当前的一个热门技术。单片机上网技术中的一个重要部分是在单片
上实现 TCP/IP 协议栈。现在可获得的 TCP/IP 源代码一般并不为 51 单片机设计，而 51 单片
机和 KeilC51 编译器有其自身的特点：存储类型、函数指针、重入函数等，ZLIP 就是针对
这些特点设计的 TCP/IP 协议栈。
The single chip computer network technology is a hot technology at present. An important part of the single chip computer network technology is the single chip
The TCP/IP protocol stack is implemented on the board. The available TCP/IP source code is generally not designed for 51 singlechip, but 51 single chip.
The machine and the KeilC51 compiler have its own characteristics: storage type, function pointer, reentry function, and so on, and ZLIP is aimed at
These features are designed by the TCP/IP protocol stack. (2018-03-07, C51, 1022KB, 下载1次)
对四队抢答进行“01、02、03、04”进行编号；上电开始时两位数码管显示“00”，并锁定参赛队的抢答按钮处于无效状态（不能抢答），处于待机状态。
（2）当主持人按抢答启动键时，两位数码管显示抢答倒计时间初始化时间值“15”秒，并进入抢答状态，当某一位按下抢答按键，其它队的抢答按键属于“抢答无效”工作状态，进入编号显示模块，并且蜂鸣器响起，等1s到时进入15s 回答时间的倒计时，倒计时结束进入报警模块（数码管闪动，蜂鸣器响）；若在抢答倒计时结束时还没人抢答，进入报警模块。
在报警模块中按下键回到待机模块，当主持人再次按抢答启动键时，抢答重新开始。
The four team answer "01, 02, 03, 04" number; power at the start of the two digital display "00", and lock the team answer button is in an invalid state (no answer), in the standby state.
(2) when the host press the start button to answer, two digital tube display answer countdown initialization time value "15" s, and enter the answer, when one press the answer button, buttons viesto other teams belong to "answer invalid", enter the number of display module, and the buzzer sounded, etc. 1s will enter the 15s answer time countdown, countdown to the end into the alarm module (digital tube flashing buzzer); if the end of the countdown in the first no one answer, enter the alarm module.
In the alarm module, press the key to return to standby module. When the host answers the starting button again, the answer starts again. (2017-11-12, C51, 19KB, 下载1次)
矩阵按键+一个独立按键，在这里可以按你想要的八个音节，它可以在在蜂鸣器中响出来，它有保存键，可以保存三首，在按音节时，有停顿，有延时，音节按错也可以把这个音节删除，在按过。在哪里按停顿和延时，播放时就可以在哪里停顿和延时。保存三首不要也可以删除再保存过
A matrix key + independent keys, according to the eight syllable you want here, it can ring out at the buzzer, the Save button, you can save three in the first, according to the syllable, a pause, delay, press the wrong syllable can also put the syllable deletion, in according to the. Where there is pause and delay, where can I pause and delay when playing?. Save three, do not also delete, and then saved (2017-07-31, C51, 34KB, 下载2次)
Wiegand协议是国际上统一的标准，是由摩托罗拉公司制定的一种通讯协议。它适用于涉及门禁控制系统的读卡器和卡片的许多特性。 它有很多格式，标准的26-bit 应该是最常用的格式。此外，还有34-bit 、37-bit 等格式。 而标准26-bit 格式是一个开放式的格式，这就意味着任何人都可以购买某一特定格式的HID卡，并且这些特定格式的种类是公开可选的。26-Bit格式就是一个广泛使用的工业标准，并且对所有HID的用户开放。几乎所有的门禁控制系统都接受标准的26-Bit格式。
Root protocol decoding (2017-07-11, C51, 136KB, 下载7次)