你在使用计算机时,可能遇到这样一种故障:按某个键或某几个键时,无任何反应,但其他键均可正常工作。产生此种故障的原因有多种:①有杂物卡在键盘内,使键盘不能到位;②对应该键的印刷电路上复盖灰尘或氧化物,使该键接触不良;③按键的导电橡胶上有灰尘或导电橡胶的阻值变大,线路无法正常接通。 When you are using your computer, you may encounter such a failure: When you press a key or a few keys, nothing happens, but the other keys work. There are many reasons for such failure: ① debris stuck in the keyboard, so that the keyboard can not be put in place; ② corresponding to the key on the printed circuit cover dust or oxides, so that poor contact with the key; ③ button conductive rubber The resistance of the dust or conductive rubber becomes larger, the circuit can not be properly connected.