-
It worked by transmitting electrical signals over a wire laid between stations. -
The ABC was the basis for the modern computer we all use today. The ABC weighed over 700 pounds and used vacuum tubes. It had a rotating drum, a little bigger than a paint can, that had small capacitors on it. -
The telephone worked by converting sound into an electrical signal via a 'liquid transmitter' -
It used a rotating disk with holes arranged in a spiral pattern. -
The original handset, called the DynaTAC 8000x (DYNamic Adaptive Total Area Coverage) weighed 2.5 pounds (1.1 kg), measured 10 inches (25 cm) long and was dubbed "the brick" or "the shoe" phone. -
The radio was primarily used to contact ships that were out at sea. -
Is a wireless, portable personal computer with a touchscreen interface. The tablet form factor is typically smaller than a notebook computer, but larger than a smartphone.