对新的液晶进行扫描，检查是否有坏的点阵

CPLD与51单片机总线接 -CPLD with 51 microcontroller bus access

1602 driver example

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

用C51做的计算器源码，矩阵键盘，液晶显示，C和ASM混合编程，PROTUSE自带的例程-C51 calculator to do with source code, matrix keyboard, LCD, C and ASM programming mixed, PROTUSE built-in routines

】本文介绍了一个使用单片机和CPLD联合控制步进电机的方案。首先阐明步进电机的工作原理及控制方法，然后 提出了系统的软硬件设计框架，详细讨论了单片机和CPLD的逻辑接口问题和交换数据的协议，以及用状态机来设计脉冲分配器 的方法。-This paper describes a combined use of SCM and CPLD stepper motor control program. First of all, to clarify the working principle of stepper motor and control method, and then put forward a system of hardware and software design framework for a detailed discussion of the MCU and CPLD logic interface issues and data exchange agreements, as well as the use of state machine design Pulse Distributor methods.

本程序为应用在Arm7下的Ps2键盘接口程序。避免了因多中断而数据出现错误的情况-This procedure is used in ARM7 under the Ps2 keyboard interface program. To avoid interruption caused by more than the case of data error

x5045有四种功能：分别是上电复位、看门狗定时器、电源电压监控和块锁保护串行eeprom的功能， 该程序通过改变控制寄存器的参数可以实现看门狗定时器监视电压和设置保护rom区，每次复位后 地址计数器都是该区的首地址（个人观点），即断点地址。 问题：其实对该芯片的应用还是很模糊-x5045 four functions : the reduction of electricity, watchdog timer, Supply voltage control and protection block serial eeprom lock function, The procedure by changing the parameters of control register can be achieved watchdog timer and set up surveillance voltage protection rom, After each reset address counter area is the first address (personal view), breakpoint address. Question : In fact, the application of this chip is still very fuzzy! !

cstn 1.5 with ST7636的C51测试程序.-cstn ST7636 1.5 with the C51 test procedures.

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等接口芯片实现二十路以上的电压监测、显示与通断控制。编程环境：keil-Based on 51 single-chip microcomputer system, using AD conversion chip ADS7841, digital tube driver chip CH452, and CD74HC4051, CD74HC259, CD74HC154, 74HC244 interface chip such as the way to achieve more than twenty-voltage monitoring, display and on-off control. Programming environment: keil