A 6bit code in which textual information is recorded. It is a compressed form of the ASCII character set, and thus not all of the characters in ASCII are available in SIXBIT, notably the nonprinting characters and lowercase letters are omitted. The range of SIXBIT code is 00 to 77 (octal), which is equal to 40 through 137(octal) in ASCII.; 一種記錄正文信息的六位代碼,是ASCII字符集的壓縮形式,不是所有的ASCII字符都包含 在SIXBIT中,略去了非打印字符和小寫字母。其代碼范圍是00到77(八進(jìn)制),相當(dāng)于ASCII 碼的40到137(八進(jìn)制)。