SCM 4 × 4 keyboard and 8-bit digital tube display constitutes an electronic code lock with keil procedures and protuos of analog circuits.

33. 4×4键盘及8位数码管显示构成的电子密码锁
...........................................\33.4×4键盘及8位数码管显示构成的电子密码锁.doc
...........................................\Keil-C
...........................................\......\lock
...........................................\......\lock.c
...........................................\......\lock.hex
...........................................\......\lock.lnp
...........................................\......\lock.LST
...........................................\......\lock.M51
...........................................\......\lock.OBJ
...........................................\......\lock.Opt
...........................................\......\lock.plg
...........................................\......\lock.Uv2
...........................................\......\lock.__i
...........................................\......\lock_Opt.Bak
...........................................\......\lock_Uv2.Bak
...........................................\......\STARTUP.A51
...........................................\......\STARTUP.LST
...........................................\......\STARTUP.OBJ
...........................................\Last Loaded lock.DBK
...........................................\lock.DSN
...........................................\lock.PWI

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