A parallel circuit is a different path for current through each of its components. A parallel circuit provides the same voltage across all its components and hence the same brightness of bulb. The voltage is the same in a parallel circuit while the voltage is  shared in a series circuit.nother example of a series circuit is a houehold lamp and a light switch. When the light switch is open, no current flows through it and therefore, no current can flow through the lamp either. When the switch is closed, current will now flow through the switch and the lamp.
The Internet was the result of some visionary thinking by people in the early 1960s who saw great potential value in allowing computers to share information on research and development in scientific and military fields.he Internet was designed to provide a communications network that would work even if some of the major sites were down. If the most direct route was not available, routers would direct traffic around the network via alternate routes.
Licklider was the first to describe an Internet-like worldwide network of computers, in 1962. He called it the Galactic Network.. Leonard Kleinrock was the first to publish a paper about the idea of packet switching, which is essential to the Internet.