It is fairly simple to construct a ‘singing’ melodious greeting card, as explained in the following article. You can replicate this greeting card design through matching chips which carry about […]
Musical Doorbell Circuit with Many Melodies – Christmas Carols, Big Ben, and More
As seen in the diagram the main stages of the circuit is built-in inside the musical chip in the form of oscillator, frequency divider, drive ROM, a ROM having 512 […]
Programmable Musical Organ Circuit
In this post we are going to construct a musical organ circuit whose musical tone can be programmed by adjusting 10 pre-sent resistors in the circuit and the speed of […]