-Using PIC16F877a-driven, character liquid crystal display 1602, with four buttons: namely, function keys, confirmation key,+ key,- keys.
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Electric control box with four buttons a unique user-friendly design of one-touch operation, convenient and quick.
电控箱采用四位按钮独特的人性化设计单键操作,方便快捷。
With only four buttons, it is questionable whether this needs to be encoded in the database, as well.
由于只有4个按钮,是否也需要在数据库中对其进行编码还存在疑问。
Once the correct PIN is entered on the card's four buttons, the missing digits are filled in and the card's magnetic strip is populated with data.
一旦用户通过小键盘上的四个按钮输入正确的个人身份证号码,缺损的数字才会显现出来,这样才能看到完整的卡号;而且这时信用卡的磁条也会被填入数据,磁条锁定便被解开可以在网上或者商店购物。
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