Thanks for the article!!Untuk menghasilkan variasi output LED kita dapat menggunakan bantuan push button, dimana ketika tombol push button ditekan maka nyala led akan berubah sesuai program yang telah kita buat. It is not working in simulation because you need to provide both logic 1 and 0 I had the same issue just use a 3 pin switch SW-SPDT it will work just fine. I appreciate, cause I found just what I was looking for. Plz sir give me the solution and its program in embedded c. I want in this program when i press the button one time then the first led is glow only one time and the others npt glow and when i press the button two times then the second led is glow two times and others are offРІР‚В¦. Sir i want to make a program in which i used one push button on input and 8 leds on output port. I am sure they will be benefited from this web site. Why you should put this resistor? This is explained well in this youtube video. As mentioned by Aditya Abhinav in the comment, I should have added a resistor of 10K between the button and the ground in the Proteus. Even though, you can refer to the schematic given below. But I can assure you this is a correct program because it is working fine on my development board. For the execution of the program, you can refer the schematic given below drawn in Proteus. I have introduced a delay of ms Mili-Second.

For example, if you do not introduce delay and press the push button, it will process a single press as multiple presses. We need to debounce the switch because it prevents from processing multiple presses. We are going to check the status of the particular pin- declared as the input pin. The program is pretty much straightforward. Then according to the status of the pin, we will command LED to turn on or off. If the button is pressed or released, its value is going to change. Then continuously monitoring the status of the pin it is connected. It is used to give user input to the microcontroller. A push-button works just like a switch works. We can do this by declaring a suitable value to DDR register. In this tutorial post, I am going to guide you about interfacing of push button with Atmega16 microcontroller.

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