April 12, 2012

第34次

看完課本第八章第一節[密碼與生活]後. 請舉至少5個實例說明密碼在生活上的實際應用?

1.提款卡
2.手機開機
3.電子郵件
4.保險箱(金庫密碼)
5.腳踏車車鎖
6.門禁鎖
7.指紋辨識器

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