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STM32内存知识

在了解STM32内存之前需要了解 MCU 的型号和MDK 中的.map 文件,很多刚学习 stm32 时都不会过多的去了解 MCU 的选型,是在太枯燥了。这里在从新了解一下,久了就熟悉了。 一、STM32命令规则 二、MDK下生成.map文件 在MDK中勾选.map文件的生成,确认后编译一下工程即可生成,map文件。

jadx-gui 打开提示 The registry refers to a nonexistent 的解决办法

出现这个问题大都是因为下载的 JDK 的 Archive 版,手动安装 JDK 没有设置注册表的信息就会造成这种问题,解决办法也很简单: 注册表定位到 计算机\HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Runtime Environment 我这儿是 JDK-11 所以这个路径的注册表内容如下 设置下 JAVA_HOME

ITextRenderer refers to the missing type DocumentException

1、The method createPDF(OutputStream) from the type ITextRenderer refers to the missing type DocumentException异常原因: html代码生成PDF时的异常,通过查看源码,发现是因为没有导入相应的jar包,“com.lowagie.text”,在maven仓库可以搜索到:https://mvnrepository.com/arti

The JavaScript this Keyword

https://www.w3schools.com/js/js_this.asp What is this? The JavaScript this keyword refers to the object it belongs to. It has different values depending on where it is used: In a method, this refers to the owner object. Alone, this refers to the global

An association from the table PersonAddress refers to an unmapped class

2019独角兽企业重金招聘Python工程师标准>>> cjq\hibernate\tutorial\domain01\Person.hbm.xml文件内容为: <?xml version="1.0"?> <!DOCTYPE hibernate-mapping PUBLIC         "-//Hibernate/Hibernate Mapping DTD 3.0//EN"         "http:

Database Security

Database security is built upon a framework encompassing three constructs:confidentiality, integrity and availability (Bertino & Sandhu,2005). Confidentiality or secrecy refers to the protection of data against unauthorized disclosure, integrity refe