教学打铃控制器,单片机,汇编语言,proteus仿真

AT98S52单片机头文件，可直接对IO口进行位操作，简单方便-AT98S52 Singlechip header files can be directly carried out the mouth of the IO-bit operation, simple and convenient

51单片机可在线编程多功能实验板使用手册 内附多个实验程序（供初学者参考）-51 Single-chip can be online programming multi-function board user manual containing a number of experimental procedures (for beginners reference)

两片max7219的串联编程 编程语言为汇编语言-two max7219 Series programming language programming language for compilation

在有线电视中实现程控有源滤波器设计。为了充分利用设备和传输线,需要一种具有频率选择的网络―滤波器,将同一线 路上不同的信号分开,在电视机中也需要不同的滤波器(即选择有用信号,抑制无用信号) 。下面利用8051 单片机与12 位分辨率的DAC1208 数模转换芯片相结合的系统实现时间常数可程控有源滤波器设计,阐述了硬件结构与软件设计-In cable television in the realization of program-controlled active filter design. In order to make full use of equipment and transmission lines, the need for a frequency selective network- filter, the same lines separate different signal in the TV also requires a different filter (ie, choice of useful signals and suppress unwanted signals). Following the use of 8051 and 12-bit resolution digital-to-analog converter DAC1208 chip combining system time constant can be program-controlled active filter design, the hardware structure and software design

010基于单片机的无线传输 -010 based on single-chip wireless transmission

ELAN IR接收，1621段码LCD驱动，按键处理，三线通讯等。-ELAN IR receiving, 1,621 yards of the LCD driver, keys, 3 line communications.

此程序为单片机编程，主要实现无线收发功能，所使用的无线芯片为PTR4000。-This procedure for single-chip programming, the main function of wireless transceivers used for wireless chips PTR4000.

单片机的时钟芯片、液晶芯片、以及温度传感器芯片的c语言编程，为单片机和嵌入式开发爱好者提供帮助-MCU clock chip, LCD chips, as well as the temperature sensor chip, c-language programming for microcontroller and embedded developers to help enthusiasts

频率计 等精度频率计 可以用于频率测试的等精度频率计 可用的-Such as precision frequency meter frequency meter can be used for the frequency of tests, such as precision frequency meter available

用8051单片机控制的基于DS18B20的温度上下限控制报警的KEILC工程文件-By 8051 the control of the temperature of upper and lower limits based on DS18B20 control alarm KEILC project file