继续上传：单片机89C51，LCD12864菜单程序。

这是主机C8051F005有硬件SPI的AT45DB041B的读写驱动-This is a C8051F005 mainframe hardware SPI AT45DB041B literacy drive

44780lcd驱动源程序,keil C51源码，有参考价值。-44780lcd driving source, Keil C51 source, a reference value.

完整功放的控制程序，里面包括VFD，控制面板，音量控制，音效控制，红外遥控等功能-complete PA control procedures, including inside VFD, control panels, volume control, audio control, infrared remote control functions

这是sitronix（台湾省公司）lcd驱动ic被应用在51低速单片机上的代码。-This is sitronix (Taiwan Province of the company) lcd driver ic used in 51 low-speed single-chip code.

ARM的计数器中断实验。是基于Keil For Arm的。-ARM interrupt counter experiments. Is based on the Keil For Arm.

l298调 速 程 序 常规的接法是这样的，EnableA接PWM信号，Input1输入正反控制信号， Input2是Input1经过反相以后的信号。L298的电平是与TTL电路相兼容的，一般是超过2.5V就为高电平。假如Input1为高电平时电机正转，那么低电平时就是反转，PWM信号控制电机的转速。 _________________ -l298 procedures conventional speed connection that is the case, EnableA then PWM signal, Input1 input positive and negative control signals, Input2 is Input1 through after RP signal. L298 level is compatible with TTL circuits, and is generally more than 2.5V for the high. If Input1 is high when the motor is transferred, then that is when low-level inversion, PWM signal to control motor speed. _________________

步进电机的工作原理，实现正转及逆转的方法-The working principle of stepper motor to achieve positive change and reversal of the method

用winband78e58 对422通讯操作，422通讯作为工业常用的串行通讯协议，使用广泛-with winband78e58 communications operation of 422, 422 communications industry as a common serial communication protocol, widely used

PKE（被动无钥门禁系统，汽车车门控制）整个系统遥控部分源代码。-PKE (passive-keyless-entry system, car door control) remote part of the whole system source code.

51单片机C语言应用程序设计实例精讲的源码程序，里面有protel格式的电路图和程序代码，希望对大家有帮助-51 Single-chip C language application design example精讲the source program, which has Protel format circuit diagram and program code, and they hope to have everyone help