The matrix keyboard, c language, on 51 single-chip implementation, key response

11矩阵键盘
..........\STARTUP.A51
..........\STARTUP.LST
..........\STARTUP.OBJ
..........\矩阵键盘
..........\矩阵键盘.LST
..........\矩阵键盘.M51
..........\矩阵键盘.OBJ
..........\矩阵键盘.Opt
..........\矩阵键盘.Uv2
..........\矩阵键盘.c
..........\矩阵键盘.hex
..........\矩阵键盘.lnp
..........\矩阵键盘.plg
..........\矩阵键盘_Opt.Bak
..........\矩阵键盘_Uv2.Bak

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