基于51单片机系统，利用AD转换芯片ADS7841，数码管驱动芯片CH452，以及CD74HC4051、CD74HC259、CD74HC154、74HC244等...

全量程交直流无档电压表的设计 这里只给出了系统设计的方案 带有程序流程图-Wide-range AC-DC voltage meter free stall design here only gives the system design program with a program flow chart

使用W77e58读写PCF8563时钟芯片，包含所有的子函数，均可以直接使用。-Use W77e58 literacy PCF8563 clock chip that contains all of the subroutine, can be used directly.

直流电机速度测量与调节，通过设置不同的按钮来控制奠基的转速，而且显示在数码管上-DC motor speed measurement and regulation, by setting different buttons to control the ground-breaking speed, but also in the digital tube

东芝T6963控制芯片的240128点阵液晶屏驱动程序-Toshiba T6963 controller chip of the 240,128 dot-matrix LCD driver

以ST公司CPU为核心的彩色电视机的完整源程序。-ST companies to CPU as the core integrity of the source of color television.

程控增益线性脉冲放大器的设计。 设计了一种新型程控增益线性脉冲放大器。采用准高斯CR2RC2CR 成形电路结构,使用非易失性数字电位器和精密运放,使电路结构大大简化,抗干扰能力强,增益多级连续变化平稳,且具有温漂低、脉冲线性好等特点-Programmable gain linear pulse amplifier design. Design a new type of programmable gain linear pulse amplifier. Using quasi-Gaussian CR2RC2CR forming circuit structure, the use of non-volatile digital potentiometers and precision operational amplifier, so that greatly simplify the circuit structure, anti-jamming, multi-stage continuously variable gain stable, and has a low drift, pulse linear good characteristics

用步进电机画图的完整原代码，集成50多种图形-Stepper motor used to draw a complete source code, integrated more than 50 kinds of graphics

节能时控器，根据每日供电波峰，波谷，定时用电。节能，降低用电成本。C51-AT89C2051 程序-When energy-saving controller, according to the daily electricity peak, trough, regular electricity. Energy saving, reducing electricity costs. C51-AT89C2051 procedures

AVR microcontrol programme is a EEROM example

1．熟悉硬件仿真工具KD30的使用。 2．修改样本程序 SAMP1a，使无论在计数或停止计数时，按 SW3 均对计数值清零，并停止计数。 3．编制一个秒表程序, 测试精度为0.1秒，按 SW1键启动计数，再按一次 SW1键停止计数。任何时候按 SW3 键停止计数，并对计数值清零。 4．按 SW1键后， 以 0.1 秒为单位开始计数，再按一次 SW1 键停止计数。若按 SW1 键时间超过2秒，则计数值清零，回到初始状态。-1. Familiar with the hardware simulation tool KD30 use. 2. Revised procedures SAMP1a samples, regardless of the count or counts at the end, according to SW3 numerical terms were right, reset, and stop counting. 3. Preparation of a stopwatch procedures, testing accuracy of 0.1 seconds, according to bond SW1 start counting, according to a key SW1 stopped counting. By SW3 any time to stop counting bond and reset the count. 4. By SW1 bond, after 0.1 seconds for start counting, according to a key SW1 stopped counting. If SW1 keys by the time more than two seconds, then reset the count and return to the initial state.