With the rise of microprocessing, this corridor has come to be known worldwide as Silicon Valley.

CNN: District Profile: California -- 14th District

And in spite of all the headlines devoted to Silicon Valley, we found great strength outside of that particular high-tech corridor.

FORBES: Magazine Article

But it does lie on the M4 corridor, a cluster of high-tech firms that includes several names familiar from Silicon Valley.

ECONOMIST: Municipal Wi-Fi