Technology moves forward and unveils one miracle after another. It started in the eighteenth century with the invention of electricity, when Benjamin Franklin did extensive research and connected the dots between lightning and tiny electric charges. While some people do not consider Franklin the inventor of electricity, it is agreed that his research led to the invention of electricity. Later, Nicola Tesla and Thomas Edison put this technology to commercial use. The reason I explicitly mention the invention of commercial electricity is because this invention is responsible for almost all technological advancement humans have made in the last two centuries. Television, radio, calculators, and eventually personal computers are based on electricity. 

This is a view of Eniac, or the Electronic Numerical Integrator And Computer, in Philadelphia, Pennsylvania:

It is very hard to make a distinction between computing and communication. Computers started with the need for standard calculations and management, but the Internet literally converted computers into communication devices. Later, the same technology converted circuit-switched telephony networks to packet-based cellular networks. Today is the age of advanced computing, where terabytes of data flow in the ether from cellular phones and computers through wireless networks. 

We are now standing at a juncture where the existing technology has been pushed to its limits. The last revolutionary development on a commercial scale happened in 2007, when Steve Jobs launched the first iPhone. All later smartphones (Android, iOS, and others) were made on the concepts brought to life by Apple. Sure, now we have powerful batteries, better processors, higher RAM, and better cameras, but they haven't caused a revolution of that scale.