For an electronics hobbyist or a student 555 timer IC is one of the most important electronic components because of its functioning flexibility. One can develop different kinds of circuits using this ...

Circuit Diagram: Using TIMER of 8051 for Measuring Frequency: 8051 microcontroller is a 8 bit microcontroller which has 128 bytes of on chip RAM, 4K bytes of on chip ROM, two timers, one serial port ...

This simple alarm timer circuit is made with 4060 which has an integrated oscillator with a good stability with a relatively wide frequency range. In the circuit diagram the oscillator frequency is ...

The main intention of this circuit is to build a system wherein the number of persons entering or leaving a room has to be displayed on a screen. This is one of the best and very useful circuits in ...

The main part of this LED chaser circuit diagram is 555 timer IC which generates some variable frequency. 555 timer IC is a general purpose IC which can be configured in some different modes like ...

This 5-colour LED flasher circuit can be built using the popular 555 timer and 4017 decade counter ICs.

Object counter using 8051 microcontroller. This circuit can count the number of objects passing across a line , number of persons passing through a gate/door and so on.