Behold, the illustrious history of these here internets in convenient graphic timeline form. Who knew Pizza Hut played such a prominent role?
That's not a coaxial cable pictured for '76, that's a CAT 5 "modern" networking cable. Coaxial cable is like what they use for cable TV. Networking coax had ends that have a quater-turn quick connect fitting, and they were daisy-chained with T-junctions from device to device and had to have a special cap at the end of the line.