This is a pulse generator with adjustable duty cycle made with the 555 timer IC. The circuit is an astable multivibrator with a 50% pulse duty cycle. The difference from the standard design of a 555 ...

Milpitas, CA—Many of you are familiar with the venerable 555 timer IC which included a multivibrator and comparator (see here), and gained wide popularity, and some cult status, as a creative building ...

You can use a microcontroller to build a clock. After all, a clock is just something that counts the passage of time. The only problem is that microcontrollers can’t track time very accurately. They ...