Hello experts
Basically I am from electronics side. I want to control electronics device using the internet. One PC will send signal via internet to another PC to control electronics device

client PC1 --- > Internet-----> web server PC2 -----user PC3 connected + electronic device

I need to develop website. I want to create web site. In a web site there will be web application and In web application there will be button.

web site ---> web pages - web application - button

when client press this button than binary signal will send from client PC1 to port of user PC3via internet

this is possible but I am confused on developing tools and language. To make web page I will be use Html but I don't understand how does one pc will send digit to another PC via internet ? which tool and language I have to select