ASCII values up, down, left, right of

Others 2020-02-10 10:30:15 views: null

Today, I noticed something written a keyboard up and down about four keys when after only knows ASCII value in order to determine, recorded at four key ASCII value

On ↑: 72

Under ↓: 80

Left ←: 75

Right →: 77

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Origin blog.csdn.net/qq_41505957/article/details/103083108

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