我们知道计算机处理器由多个决定性电路组成，每个决定性电路可以是关闭的，也可以是开启的。 这两种状态在内存方面用 0 或 1 来表示，称之为bit(BInary digiTS)。 一组八个bit组成一个字节（byte）。 1 个byte可以表示零 (00000000) 和 255 (11111111) 之间的数字，即=256。
A computer processor is made up of multiple decisive circuits, each one of which may be either OFF or ON. These two states in terms of memory are represented by a 0 or 1. In order to count higher than 1, such bits (BInary digiTS) are suspended together. A group of eight bits is known as a byte. 1 byte can represent numbers between zero (00000000) and 255 (11111111), or 28 = 256 distinct positions. Of course, these bytes may also be combined to represent larger numbers. The computer represents all characters and numbers internally in the same fashion.
而一个KB(KiloBytes)不是1000个bytes，而是i.e. 1024 个 bytes。一次类推 1 MB(MegaBytes) 是个 bytes等等。
A kilobyte(KB) is not exactly, as one might expect, of 1000 bytes. Rather, the correct amount is i.e. 1024 bytes. Similarly, a megabyte(MB) is not i.e. 1, 000, 000 bytes, but instead i.e. 1, 048, 576 bytes. A gigabyte is bytes.
内存的不同单位 Types of various Units of Memory：
ByteKilo ByteMega ByteGiga ByteTera BytePeta ByteExa ByteZetta ByteYotta Byte
各单位之间的换算关系：
1B(byte 字节)=8bit1KB(Kilobyte 千字节)=1024B=B1MB(Megabyte 兆字节 简称“兆”)=1024KB=B1GB(Gigabyte 吉字节 又称“千兆”)=1024MB=B1TB(Terabyte 万亿字节 太字节)=1024GB=B1PB（Petabyte 千万亿字节 拍字节）=1024TB1EB（Exabyte 百亿亿字节 艾字节）=1024PB1ZB(Zettabyte 十万亿亿字节 泽字节)= 1024EB1YB(Yottabyte 一亿亿亿字节 尧字节)= 1024ZB1BB(Brontobyte 一千亿亿亿字节)= 1024YB
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