keilc51中stc芯片补丁，用于stc系列芯片的开发

232同485转换的pcb图，有需要的只要稍加修改一下就可以了-232 with 485 conversion pcb diagram, there is a need for as long as a little tinkering can be a

单片机结合简单外围计数电路设计的频率计，内附电路和c源代码-Single-chip combination of a simple design of the external counting circuit frequency meter, enclosing the circuit and c source code

主机板测试机的液晶显示程序； 运行平台STC89C516；开发软件为KEIL 目标器件为19264-Motherboard test machine LCD procedures operating platform STC89C516 develop software for the KEIL target devices for 19,264

51单片机与串行ADC芯片tlc0834接口设计-51 MCU and serial ADC chip interface design tlc0834

TI的简单协议栈，示范怎么组建一个传感器网络-TI simple protocol stack, model how to form a sensor network

高精度实时时钟-SD2001驱动程序，在要求较高精度的地方可以作为参考资料。-High-precision real-time clock-SD2001 driver in place require a higher accuracy can be used as reference materials.

使用C8051F020和FPGA等其它相关硬件制作的一个程控滤波器，里面包括详细的源代码和设计文档，希望对大家有用。-C8051F020 and FPGA use and other related hardware produced by a program-controlled filter, which include detailed source code and design documents, in the hope that useful to everyone.

12864液晶驱动程序。学习单片机很好的程序。-12864 LCD driver. MCU learning a good program.

8253的初始化程序举例: 例1：选择2号计数器，工作在3方式，计数初值为533H（2个字节），采用二进制计数。其初始化程序段为 MOV DX，307H ；命令口 MOV AL，10110110B ；2号计数器的初始化命 令字 OUT DX，AL ；写入命令寄存器 MOV DX，306H ；2号计数器数据口 MOV AX，533H ；计数初值 OUT DX，AL ；选送低字节到2号计数器 MOV AL，AH ；取高字节送AL OUT DX，AL ；后送高字节到2号计数器 -8253 initialization procedures examples : Example 1 : Select counters on the 2nd, in three ways. Counting for the initial 533H (2 bytes), a binary counting. Initialization of its procedures for MOV DX, 307H; I ordered MOV AL, 10110110B; on the 2nd Counter initialize command word OUT DX, AL; write commands Register MOV DX, 306H; data on the 2nd Counter I MOV AX, 533H; Counting initial OUT DX, AL; low-byte sent to the 2nd Counter MOV AL, AH; With a high-byte send AL OUT DX, AL; evacuations high byte counter to the 2nd

Ra8803测试程序，320*240液晶，包括8080和6800时序-Ra8803 test procedure, 320* 240 LCD, including 8080 and 6800 time-series