It's great to look back at old technology once in a while, if not only to help us appreciate the technology we use today and can expect in the future. With that said, the cellular phone celebrates 40 years of existence. Can you believe it?

A few years ago I stopped by a yard sale and saw a cell phone that many of us old timers recognize as 'The Brick.' Even today I kick my self for not picking it up for a buck. It makes for a great show & tell piece for kids who are always lamenting that they don't have the latest smart phone.

CNN now takes us back in time...