Computer program products and methods for displaying information relating to one or more digital looseleafs are disclosed. High-voltage peripheral circuits are provided with a gate dielectric layer of a second thickness. Meanwhile, hot water is discharged in the other way around when the faucet handle is switched to the left for the upper switch valve to slide to the right till the curved switch groove thereof covers on top of a hot water inlet hole and the water outlet hole thereof for hot water discharge in the habitual manner, preventing users from carelessly burning themselves by hot water.