Professor David Patterson retired from U.C. Berkeley last summer after a 40-year academic career in computer architecture.He's now a key part of the team behind a critical chip that Google uses for artificial intelligence processing.Without this chip, Google top execs estimated it would have had to double its data centers to support even a limited amount of voice processing. A year ago the Univers
![Meet the 69-year-old professor who left retirement to help lead one of Google's most crucial projects](https://cdn-ak-scissors.b.st-hatena.com/image/square/f59d8e3284eda64c23672ce8bb23f824391a860c/height=288;version=1;width=512/https%3A%2F%2Fimage.cnbcfm.com%2Fapi%2Fv1%2Fimage%2F104451499-david_patterson.jpg%3Fv%3D1494044930%26w%3D1920%26h%3D1080)