Bit: bit
A binary data 0 or 1 is the smallest unit of a computer transmission.
A byte of eight bits.
Byte: byte
Metering unit storage space, a byte has the eight bit.
The 1024 bytes and on behalf of 1K.
An English one byte (fixed encoding)
1 letter = 1byte = 8bit
A character occupies two bytes (fixed encoding)
1 = 2byte = 16 bit characters
Punctuation (English)
Chinese occupies two bytes, English occupies one byte