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Description: 用4*4键盘组成0-9数字键及确认键。
用8位数码管显示电路提示信息，当输入密码
时，只显示“8.”，当密码位数输入完毕按确
认键时，对应的密码与设定的密码进行比较，
若密码正确，则门开，此处继电器发出“叮咚”声；若
密码不正确，禁止按键输入3秒，同时发出“滴答”
报警声；若在3秒内仍有按键按下，则禁止按键
输入3秒被重新禁止-4* 4 keyboard with the composition of the number keys 0-9 and confirm key. With 8-bit digital tube display circuit message, when the input password, only shows " 8." When the password confirmed by the median enter key when finished, the corresponding password and set password for comparison, if the password is correct, then the door open relay here a " ding dong" sound if the password is not correct to prohibit the importation of key three seconds, at the same time issued a " ticking" sound alarm if there are still three seconds press the button, the button to prohibit the importation of three seconds was to prohibit the
Platform: |
Size: 20480 |
Author: han_ |
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