片机电子钟的计时脉冲基准是由外部晶振的频率经过12分频后提供，采用内部的定时/计数器来实现计时功能。所以，外接晶振频率精确度直接影响电子钟计时的准确性。...

查看dos版本号-View dos version

电子小闹钟设计 带程序 原理图纸 电子小闹钟设计 带程序 原理图纸-Electronic design with a small alarm clock program alarm clock principle of drawing a small electronic design principle with the procedure drawings

采用电流正弦波细分原理，研制出了一种三相混合式步进电机驱动器，实现了三相混合式步进电机的相电流闭环控制和细分驱动。具有多种细分和相电流设置功能，能够驱动多种三相混合式步进电机，其最小步距角为0.036°。-Breakdown of the use of sinusoidal current principle, developed a three-phase hybrid stepping motor driver, to achieve a three-phase hybrid stepping motor phase current breakdown of the closed-loop control and drive. With multiple segments and phase current setting function, able to drive a variety of three-phase hybrid stepping motor, the smallest step angle is 0.036 °.

基于dsk5402的语音设计,很有用呀.我调试过的,保证正确-Dsk5402 voice-based design, it is useful. I have been debugging to ensure that the correct

用89c2051实现可随机编程的小巧机器人的汇编语言源程序-Can be used 89C2051 realize compact random programming of the robot assembly language source

8031直接驱动LED的电路 以下是利用8031的I/O口直接驱动LED的电路原理图。电路通过8031的P0、P2口连接一片74LS373和一片27128构成外拓存储器，通过P1口直接连接LED，驱动显示器，通过P3.0、P3.1、P3.2、P3.3连接电平开关S1、S2、S3、S4作为逻辑输入控制。-8031 direct-drive LED circuit is the use of 8031 following the I/O port directly drive LED circuit schematic. Circuit through the 8031

24C02 的读写程序。解压 直接调用。 有说明注释 的 。-24C02 read and write procedures. Extracting called directly. A descriptive notes.

lex文法的源程序(编译原理相关)-lex grammar of the source (compiler principles relevant)

PT2258+89C2051+TDA7377 功放程序-PT2258+ 89C2051+ TDA7377 amplifier procedures

pic16f877a和LCD1602一个简单的霹雳灯