Hi guys. Just a few interesting questions for you here. Hopefully some
of you could tell me the answers!

1. Why are wall sockets (in the USA at least) 120 volts? Why not 12? Or
150?
2. Why are most batteries 1.5 volts? Why not 1? Most chips I use need
5v, so why not 5? Or 2.5?
3. Why do computers use 12v and 5v instead of 15v and 5v, or some other
combination.

Just some questions to ponder, thx.

-Michael Cook

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