Comcast Cable originated in 1963 as American Cable Systems. ACS was founded by Ralph Roberts, Daniel Aaron and Julian Brodsky. The company incorporated in Pennsylvania in 1969 as the Comcast Corporation.
In 1996, Comcast launched Comcast Online, a broadband internet service. Comcast currently provides broadband service to over 18 million customers. 
In 2002, Comcast paid $25 million to the University of Maryland to name their basketball arena the Comcast Center.
In 2009, Comcast bought majority ownership in NBCUniversal. Comcast also owns interests in E! Entertainment, the Style Network, G4 and the Golf Channel.
In 2010, the company won a Consumerist award for being the worst company in America.
In February 2020, Comcast purchased a little known ad supported free television service called Xumo. The financial amount paid for Xumo is unknown.
Comcast is currently the largest cable and internet provider in the US. They are also the third largest home telephone provider.
The main corporate office for Comcast is located in the Comcast Center, Philadelphia, Pennsylvania.
