一个字符有多少位或字节？ [英] How many bits or bytes are there in a character?

问题描述

每个字符有多少位或字节？

How many bits or bytes are there per "character"?

推荐答案

这取决于字符是什么以及其编码是什么处于以下位置：

It depends what is the character and what encoding it is in:

• 8位ASCII编码的ASCII字符为8位（1字节），尽管可以容纳7位。

• An ASCII character in 8-bit ASCII encoding is 8 bits (1 byte), though it can fit in 7 bits.

采用ISO-8859-1编码的ISO-8895-1字符为8位（1字节）。

An ISO-8895-1 character in ISO-8859-1 encoding is 8 bits (1 byte).

采用UTF-8编码的Unicode字符介于8位（1字节）和32位（4字节）之间。

A Unicode character in UTF-8 encoding is between 8 bits (1 byte) and 32 bits (4 bytes).

采用UTF-16编码的Unicode字符介于16（2个字节）和32位（4个字节）之间，尽管大多数常见字符占用16位。这是Windows内部使用的编码。

A Unicode character in UTF-16 encoding is between 16 (2 bytes) and 32 bits (4 bytes), though most of the common characters take 16 bits. This is the encoding used by Windows internally.

采用UTF-32编码的Unicode字符始终为32位（4字节）。

A Unicode character in UTF-32 encoding is always 32 bits (4 bytes).

UTF-8中的ASCII字符为8位（1字节），UTF-16中的ASCII字符为16位。

An ASCII character in UTF-8 is 8 bits (1 byte), and in UTF-16 - 16 bits.

ISO-8895-1（0xA0-0xFF）中的其他（非ASCII）字符在UTF-8和UTF-16中将占用16位。

The additional (non-ASCII) characters in ISO-8895-1 (0xA0-0xFF) would take 16 bits in UTF-8 and UTF-16.

这意味着一点之间会有0.03125到0.125个字符。

That would mean that there are between 0.03125 and 0.125 characters in a bit.

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