鍵(jian)(jian)盤(pan)是日常(chang)生活中(zhong)最常(chang)用也是最主要的輸(shu)(shu)入設(she)備。通(tong)過鍵(jian)(jian)盤(pan),將(jiang)各(ge)種(zhong)各(ge)樣的信(xin)息傳輸(shu)(shu)進(jin)計(ji)算(suan)機當(dang)中(zhong),從而對計(ji)算(suan)機輸(shu)(shu)入數據或是發出命令等。其實(shi),鍵(jian)(jian)盤(pan)原理(li)就是由一組(zu)按陣列方式裝配(pei)在一起(qi)的按鍵(jian)(jian)開關組(zu)成,每當(dang)按下(xia)一個鍵(jian)(jian)就相當(dang)于接通(tong)相應的開關電路。