How Does Stephen Hawking Communicate?

All of us have heard about the famous personality Stephen William Hawking, one of the greatest scientists in the world. He is the writer of a very famous book, 'A Brief History of Time.' He is an English theoretical physicist and cosmologist. From a very young age, he had been interested in science and technology. When he was young, he became disabled due to a motor neuron disease known as amyotrophic lateral sclerosis (ALS).

Diagnosed with ALS

There are quite a few people who are a victim of ALS that Stephen Hawking is suffering from. However, in his case, it became the most protracted case that was ever documented. It was said that a person with ALS doesn't usually survive fo