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

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 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。依次类推 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