KIT № 7 "Timer NE555" will teach you to distinguish electrical signals by their shape and properties, determine their period, frequency and duty cycle. This designer is entirely dedicated to the intricacies of working with one of the most popular chips - NE555. By experimenting, you will learn a variety of ways to connect and use this chip, and assemble the circuit breaker, timer, metronome, infrared barrier, doorbell, tester and even piano. You will be able to apply the knowledge gained thanks to this designer to create your own interesting and useful devices.