Question

how did Stephen Hawking communicate with the author​

Answer 1

Explanation:-

After the loss of his speech, he was able to communicate through a speech-generating device—initially through use of a handheld switch, and eventually by using a single cheek muscle.

Answer 2

After the loss of his speech, he was able to communicate through a speech-generating device- initially through use of a handheld switch, and eventually by using a single cheek muscle.