Electronic clock MCU, 80C51, LED display. . Microcontroller interrupt timing.

12864（7920）液晶模块的详细使用说明和范例，以及7920的国标字库表。-12864 (7920) LCD module detailed instructions and examples, as well as 7920 GB of the font table.

LCD1602液晶驱动 单片机为AT98S52-Single-chip LCD driver LCD1602 for AT98S52

基于单片机的USB通信程序，包括完整的通信协议-SCM USB-based communication program, including a complete communication protocol

1602 的驱动程序 很完整。通过KEIL C 编译在ROTUES 上用AT89C51仿真通过。-1602 is a complete driver. Through the KEIL C compiler ROTUES used in the simulation through the AT89C51.

飞思卡尔智能小车 AD驱动程序示例代码 芯片为MC9S12XS128-AD Freescale" s Smart car driver sample code chip MC9S12XS128

一个数据库引擎,可以创建和读写DBF格式的数据库文件-A database engine, you can create and read and write DBF database file format

8051 的一个键盘扫描的程序-8051 a keyboard scan procedure

在8位单片机中对16位数进行开方运算的汇编子程序-In 8-bit MCU in the median of 16 for the compilation of prescription computing subroutine

用于事时监控着发大器的工作进程，如果发现错误，立即发出警告。-matter for the control coupled with the process, if the error is found, immediately issued a warning.

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