rú / guǒ / shū / rù / shè / bèi / chū / xiàn / gù / zhàng / yòng / hù / jiù / wú / fǎ / zhèng / cháng / cāo / zuò / diàn / nǎo如果输入设备出现故障,用户就无法正常操作电脑。If the input device malfunctions, the user cannot operate the computer normally.