↑点击上方蓝色字体,关注“嵌入式软件实战派”获得更多精彩内容。 前段时间面试了一个小伙子,他有三四年嵌入式软件开发经验的了,随意问了一个问题: MCU软件的变量是存在哪的,RAM还是ROM? 他犹豫了会,说是ROM。 接着我问他RAM和ROM有什么区别,他“呃 ...
CPU(Central Processing Unit),是一台计算机的运算核心和控制核心。CPU由运算器、控制器和寄存器及实现它们之间联系的数据、控制及状态的总线构成。众所周知的三级流水线:取址、译码、执行的对象就是CPU,差不多所有的CPU的运作原理可分为四个阶段:提取(Fetch ...
Random Access Memory (RAM) stores programs and data that is used by the CPU in real-time. The data can be read, written, and erased any number of times. RAM is a volatile memory, a hardware element ...
在嵌入式开发中,我们经常会接触到一些专业术语,例如CPU、MCU、MPU、SOC和MCM等,这些缩写代表了不同类型的电子处理单元,它们在消费电子、计算机硬件、自动化和工业系统中扮演着重要角色。 CPU(Central Processing Unit,中央处理单元):由运算器、控制器和 ...
“麻雀虽小五脏俱全”,这句话用来形容手机颇为合适。 别看只是一部小小的手机,能实现的功能却多得是。手机和电脑一样能实现强大的功能,里面包含了CPU、RAM、ROM、GPU、屏幕、摄像头、电池、传感器、射频芯片等零部件。本文中将为大家介绍手机内部比较 ...
一、ROM:只读存储器,内容写入后就不能更改了,制造成本比较低,常用于电脑中的开机启动如启动光盘bios,在系统装好的电脑上时,计算机将C盘目录下的操作系统文件读取至内存,然后通过cpu调用各种配件进行工作这时系统存放存储器为RAM。 PROM:可编程程序 ...
In the early days of computing, the difference between RAM and ROM was very clear. Random access memory (RAM) was designed to hold data while the computer was turned on and to lose it when the power ...
The term memory in a computer system refers to devices that store information in the form of chips. There are two main types of physical memory in a computer system, Random Access Memory (RAM) and ...
Let us discuss this topic in more detail. 1] Hard Disk Drive (HDD) or Solid-State Drive (SSD) When it comes down to common computer memory, the hard disk drive is likely at the top of the list. If you ...