英语翻译In most modern computers main memory is volatile which means that it looses its memory when the power is removed.Memory is divided into many identical storage cells.Each cell contains a fixed number of bits.Eight bit cells are called byte
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英语翻译In most modern computers main memory is volatile which means that it looses its memory when the power is removed.Memory is divided into many identical storage cells.Each cell contains a fixed number of bits.Eight bit cells are called byte
英语翻译
In most modern computers main memory is volatile which means that it looses its memory when the power is removed.
Memory is divided into many identical storage cells.
Each cell contains a fixed number of bits.
Eight bit cells are called bytes.
Each storage cell is given a unique address,which is called the cell's location
A CPU only has two ways to access a memory location,such as Read and Write.
The I/O Subsystem provides a consistent link to the many I/O devices attached to the computer system
A CPU accesses devices via I/O ports.
There are two computer design techniques used for accessing I/O ports:
Access the port as a memory address.CPUs that implement this technique reserve a special range of memory addresses for I/O ports.
Use a separate addressing mechanism.CPUs that reserve a separate address space for I/O ports must use special instructions for accessing the ports.
谢谢两位的诚恳回答
英语翻译In most modern computers main memory is volatile which means that it looses its memory when the power is removed.Memory is divided into many identical storage cells.Each cell contains a fixed number of bits.Eight bit cells are called byte
现在很多电脑在电源被切断的时候,储存内容有可能被毁坏.
记忆被划分成许多相同存贮细胞.
各个细胞包含位的一个固定的数字.
八次位单元叫做字节.
各个存贮细胞被给一个独特的地址,称单元地点
CPU 只有二种方式访问一个存储单元,譬如读和写.
I/O 子系统提供一个一致的链接对许多输出入装置附有计算机系统
CPU 访问设备通过I/O 口岸.
有二计算机设计技术被使用为访问I/O 口岸:
访问口岸作为存储地址.实施这种技术储备存储地址的一个特别范围为I/O 的CPUs 端起.
使用一个分开的演讲的机制.为I/O 口岸预留一个分开的地址空间的CPUs 必须使用特殊指令为访问口岸.
不好意思啊本人非专业 所以很多词实在是翻不准确咯~
但是这段话大概的意思是
现在的大部分电脑不通电的时候其存储的内容将不可读.电脑的存储设备分成几个小区,然后每个区可以存一定比特(就是单位)的信息,每个区都有一个唯一的路径,叫做其定位,cpu可以通过读取和写入两种方式进入存储区域.
I/O子系统是附属于计算机系统的,它给I/O设备提供一个路径,CPU通过I/O点来读取,以下...
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不好意思啊本人非专业 所以很多词实在是翻不准确咯~
但是这段话大概的意思是
现在的大部分电脑不通电的时候其存储的内容将不可读.电脑的存储设备分成几个小区,然后每个区可以存一定比特(就是单位)的信息,每个区都有一个唯一的路径,叫做其定位,cpu可以通过读取和写入两种方式进入存储区域.
I/O子系统是附属于计算机系统的,它给I/O设备提供一个路径,CPU通过I/O点来读取,以下列举了两种使用I/O点的设计方式:1是存储的地址2是专用的地址.第一种使用专门的存储区域,第二种则是必须通过特殊的指令.
如果你对这个领域比较明白的话 应该能理解~ 要是不明白 我就等于没说 呵呵~
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