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PDU 编码规则 #178

Open jwenjian opened 4 years ago

jwenjian commented 4 years ago

Card PDU 编码规则 added the to the 网络收藏夹 list in the 遇见 board at January 16, 2020 at 02:05PM
 
> PDU 内容总长度 140 个字节 (1120位),支持采用三种编码方式:7-bit、8-bit 和 UCS2 编码。 7-bit 编码——用于发送普通的 ASCII 字符,ASCII码表最大到0x7X,最高位为0,总 7-bit,实际编码时则可把8-bit的最高位比特使用起来,所以可支持1120/7=160个字符;
 
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