This is a simple and very useful article on building a circuit that produces “ding dong” sound using 555 timer. We observe different types of door bells in different houses. They produce different ...

Here's a look behind the George Harrison solo hit “Ding Dong, Ding Dong,” which celebrated change and the New Year.

Halloween is full of goblins, ghouls, jack-o’-lanterns, skeletons, and candy. Lots of candy. To get at that candy, trick-or-treaters might well have to ring your doorbell. Halloween is possibly the ...