06 2023 档案
摘要：gcc code-editor(e.g VS Code)
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摘要：拼接字符串, 在定义好变量之后, 输出时候的拼接, 注意无意输出一些空格 。 比如: #!/bin/bash a1="China" a2="${a1}, Japan and Korean are the three important countries in east asia. \n" a3="
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摘要：
One connection problem: after the core board is bought back, the pin header needs to be manually soldered to the board. Originally I thought it could
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One connection problem: after the core board is bought back, the pin header needs to be manually soldered to the board. Originally I thought it could
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