电路图和程序是正确的。如果问题可以去我的博客吨..

一个对4X4数字键盘进行行&列扫描,获取扫描码的程序,支持符合键,串键,软件去抖.-one pair of 4x4 digital keyboard ranks scanning, access code scanning procedures, with key support and collaborate keys, software to tremble.

stc单片机IAP源码,可将数据写入单片机内部FLASH中,无须外扩FLASH,速度快-stc IAP source SCM, data can be written into the internal FLASH MCU, FLASH without foreign expansion, speed

51单片机开发的ps键盘c语言程序，为学习和研究单片机及嵌入式系统开发的同学提供帮助-51 MCU Development ps keyboard c language program, for study and research microcontroller and embedded system development to help students

单片机C51语言的Mini X 嵌入式操作系统-C51 microcontroller Mini embedded OS X

MSP单片机开发应用实例，适用于任何型号-MSP development and application of single-chip example, apply to any model

本文介绍了ISP程序设计方法，以及在SST和STC单片机上的具体实现方法-This paper introduces the ISP programming method, as well as in the SST and the STC on the concrete realization of single-chip approach

周立功的EazyARM2200的模板，里面还有ucos的模版，还有ARM和Thumb两种模式下的模版-Ligong EazyARM2200 weeks of the template, there is also uCOS template, there are two types of ARM and Thumb mode template

GUI快速生成，12864LCD，支持多级菜单，支持Mega系列单片机-Express GUI generation, 12864LCD, support multi-level menu, support Mega Series MCU

avr单片机中TWI主机发送和主机接收程序代码

bd3201-14A（DRE）提供的高性能数字音频信号处理能力，可实现紧凑的，易用 的，高质量的混响效果解决方案-bd3201-14A (DRE) provides high-performance digital audio signal processing capabilities, enabling compact, easy to use, high-quality reverb solution