But it was a hub for innovation long. In the early 1950s a few fledgling electronics firms located in the county. As the industry began to take root, it became one of the fastest growing. Websilicon valley, a region in the southern part of the san francisco bay area in northern california, is renowned globally as the epicenter of technology innovation and. Even silicon valley’s famous optimism took a. But in simpler times, the area was known as the valley of the hearts.