It means: the binary code transmitted and processed in the CPU as a whole is 32 bits. The word length of the computer determines the actual number of bits processed by its CPU in one operation. A byte is an 8-bit long binary unit; so the word length is 4 bytes, and the code bits are transmitted and processed in the CPU as a whole. It is "4×8=32" bits.
The operating environment of this tutorial: Windows 7 system, Dell G3 computer.
The word length of a microcomputer is 4 bytes, which means that the binary code transmitted and processed in the CPU as a whole is 32 bits.
The word length of the computer determines the actual number of bits processed by its CPU in one operation. One byte is an 8-bit long binary unit; so when the computer's word length is 4 bytes , the code bits that are transmitted and processed in the CPU as a whole are "4×8=32" bits.
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Word length of computer
In the computer field, for a specific In computer design, a word is a term used to represent its natural unit of data, a fixed length used to represent a one-time transaction. The number of bits in a word, that is, the word length, is an important feature in the structure of computer systems. Word length is reflected in many aspects of computer architecture and operation. Most registers in computers are one word in size. Typical numerical values processed by computers may also be in word length units.
The unit of data transfer between CPU and memory is usually one word length. Also, the address used to specify a storage location in memory is often expressed in word lengths. The word lengths of modern computers are usually 16, 32, or 64 bits.
Other word lengths that have been used are: 8, 9, 12, 18, 24, 36, 39, 40, 48, 60 bits; slab is another early word length example.
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计算机字长取决于数据总线的宽度。一个字中的二进制位的位数称为字长,有8、16、32、64位之分,字长由微处理器对外数据通路的数据总线条数(宽度)决定。数据总线的宽度是决定计算机性能的一个重要指标,微型计算机的数据总线大多是32位或64位。

以微处理器为核心的微型计算机属于第4代计算机。晶体管为第二代计算机的特征,集成电路为第三代计算机的特征,电子管为第一代计算机的特征,大规模的集成电路为第四代计算机的特征;而微处理器是由一片或少数几片大规模集成电路组成的中央处理器。

微型计算机使用的键盘上的alt键称为“交替换档键”;alt键是键盘的特殊键之一,与其他的键组合使用,指示特殊的操作;在Windows中,也单独作为菜单栏中的移动操作使用。

微型计算机硬件系统的基本组成有CPU、存储器、输入设备和输出设备。微型计算机硬件系统包含了5个重要的组成部分:运算器、控制器、存储器、输入设备、输出设备;而控制器和运算器共同组成了中央处理器(CPU)。运算器主要功能是对数据和信息进行运算和加工;控制器可以看作计算机的大脑和指挥中心,它通过整合分析相关的数据和信息,可以让计算机的各个组成部分有序地完成指令。

计算机在处理数据时,一次能直接处理的二进制数据的位数称为:字长。字长是指计算机一次能直接处理的二进制数据的位数,字长越长,计算机的整体性能越强。

微型计算机键盘上的shift键称为上档键。微型计算机是由大规模集成电路组成的、体积较小的电子计算机,它有着体积小、灵活性大、价格便宜、使用方便等特点。

微型计算机的发展是以微处理器的发展为表征的,因为微处理器是计算机一切活动的核心;而微处理器能完成取指令、执行指令,以及与外界存储器和逻辑部件交换信息等操作,是微型计算机的运算控制部分。

计算机字长是指CPU一次能并行处理的二进制位数,字长总是8的整数倍,通常PC机的字长为16位(早期),32位,64位。计算机在存储、传送或操作时,作为一个单元的一组二进制码称为字,一个字中的二进制位的位数称为字长。

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