很少见的源码公开的msc51和z80的c编译器。

由于输出的是方波，比较难听:-) 只能说是非常难听:-)为什么呢？只因为输出的是方波,包含了大量的奇次谐波。 你可以用双龙的"虚拟仪器"分别产生正弦波、三角波和方波听一下，正弦波感 觉就比较纯正，而方波则要多难听有多难听！-As the output is a square wave, more bluntly :-) can only say that it is very nasty :-) Why? Simply because the output is square wave, including a large number of odd harmonics. You can use Shuanglong

用89S52编的的蜂鸣器发声，有点简单，但最为一个发声的实力来说足够了-89S52 series with the buzzer sound, a bit simple, but most of the strength of a voice enough for the

基于时间触发调度器的PID控制，程序所用期间为C515，PID带有抗死锁功能-Time-triggered scheduler based on the PID control, the procedure used for C515, PID with anti-lock function

一个微型打印机的C语言源程序-a micro printer C language source

密码锁调试程序成功，只是不知什么原因，显示不正常-Lock

结构体编的菜单程序，经过调试，大家一起分享一下-The menu structure for the procedure, after testing and we can work together to share

此程序是用9s12单片机控制直流电机的控制程序，已在实物上调试通过。包含PWM程序、通信程序等-this procedure is 9s12 MCU control of the DC motor control procedures, the physical debugging through. PWM includes procedures, communication procedures, etc.

YM1602的读写程序，看了就知道了，-YM1602 reading and writing process, read on to know, and

通过单片机控制0832芯片实现数模转换 输出波形-0832 through the single-chip microcomputer to control the number of chip-to-analog converter output waveform

过负荷记录仪器分为单片机数据采集器和微机数据分析记录数据库软件两部分。 仪器具有监视变压器负荷电流（通过改变传感器也可记录最低电压）并自动记录过负荷电流出现的开始时间，最大值和结束时间的功能。当前版本可保存150次的过负荷数据。并可根据需要扩充。pc机软件具有和仪器通信的能力，能够把仪器采集的数据集中保存，并能进行查询，统计等处理。使用本仪器可以定量分析变压器的过负荷情况。 本原码为PC机部分,使用了串口通信和数据库技术 -Overload apparatus records are divided into single-chip data acquisition and data analysis microcomputer database software records in two parts. Surveillance equipment with transformer load current (by changing the sensor can also record the minimum voltage) and automatically recorded the load current emerging start time, maximum and end times of the function. 150 to save the current version of data overload. And in accordance with the need to expand. pc software and equipment with communication capability to the instrument collected data centrally stored, and can query, statistics and other treatment. Use of the device which can be quantitative analysis of transformer overload situation. Primitive machine code for the PC part, the use of the serial communications and d