2.1. 只支持基本的拉丁字符的字符编码:ASCII

2.1.1. ASCII的由来
2.1.2. ASCII编码规则
2.1.2.1. ASCII字符集中的功能/控制字符
2.1.2.1.1. 什么是Function Code功能码或 Function Character功能字符
2.1.2.1.2. ASCII中的Function/Control Code功能字符的详细含义
2.1.2.1.2.1. 0 – NUL – NULl 字符/空字符
2.1.2.1.2.2. 1 – SOH – Start Of Heading 标题开始
2.1.2.1.2.3. 2 – STX,3 – ETX
2.1.2.1.2.4. 4 – EOT – End Of Transmission 传输结束
2.1.2.1.2.5. 5 – ENQ – ENQuiry 请求
2.1.2.1.2.6. 6 – ACK – ACKnowledgment 回应/响应
2.1.2.1.2.7. 7 – BEL – [audible] BELl
2.1.2.1.2.8. 8 – BS – BackSpace 退格键
2.1.2.1.2.9. 9 – HT – Horizontal Tab 水平制表符
2.1.2.1.2.10. 10 – LF – Line Feed 换行
2.1.2.1.2.11. 11 – VT – Vertical Tab 垂直制表符
2.1.2.1.2.12. 12 – FF – Form Feed 换页
2.1.2.1.2.13. 13 – CR – Carriage return 机器的滑动部分/底座 返回 -> 回车
2.1.2.1.2.14. 14 – SO,15 – SI
2.1.2.1.2.15. 16 – DLE – Data Link Escape 数据链路转义
2.1.2.1.2.16. 17 – DC1 – Device Control 1 / XON – Transmission on
2.1.2.1.2.17. 18 – DC2 – Device Control 2
2.1.2.1.2.18. 19 – DC3 – Device Control 3 / XOFF – Transmission off 传输中断
2.1.2.1.2.19. 20 – DC4 – Device Control 4
2.1.2.1.2.20. 21 – NAK – Negative AcKnowledgment 负面响应-> 无响应, 非正常响应
2.1.2.1.2.21. 22 – SYN – SYNchronous idle
2.1.2.1.2.22. 23 – ETB – End of Transmission Block 块传输中止
2.1.2.1.2.23. 24 – CAN – CANcel 取消
2.1.2.1.2.24. 25 – EM – End of Medium 已到介质末端,介质存储已满
2.1.2.1.2.25. 26 – SUB – SUBstitute character替补/替换
2.1.2.1.2.26. 27 – ESC – ESCape 逃离/取消
2.1.2.1.2.27. 28 – FS – File Separator 文件分隔符
2.1.2.1.2.28. 29 – GS – Group Separator分组符
2.1.2.1.2.29. 30 – RS – Record Separator记录分隔符
2.1.2.1.2.30. 31 – US – Unit Separator 单元分隔符
2.1.2.1.2.31. 32 – SP – White SPace 空格键
2.1.2.1.2.32. 127 – DEL – DELete 删除
2.1.2.1.3. 各种字符的标准的读法/叫法
2.1.3. ISO 646