It Transmits electrical currents. You can use it as an amplifier or switch of currents.
Ithink that the answer is C)
Answer:
No
It just let us see moving but actually they doesn't move
ARPANET was the network that became the 'basis' for the Internet. It was based on a concept first published in 1967. It was developed under the direction of the U.S. Advanced Research Projects Agency (ARPA). In 1969, the idea became a modest reality with the interconnection of four university computers.
