how many people eat from a vending machine
minimum 10 people
The word you are looking for is Drum Switch. Google it and there are many diagrams.
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Machine guns, as we think of them today, were invented by Hiram Maxim. There were earlier battery guns (many barrels firing at once) but the Maxim machine gun was the first to use the energy of a fired cartridge to operate the gun.
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Many larger saws and similar machinery have control boxes on the front to operate them . Most of these have a prominent red STOP button.
No. A computer is a complex machine. A simple machine is a mechanical device that uses once force to operate it, (push, pull, lift, leverage). A complex machine required many outside forces to act upon it before it can be operated.
That's the transmit speed. There are many many types of fax machines out there, including older, slower models. Your fax machine must negotiate an appropriate speed that is acceptable for both machines to be able to operate at before you can send or receive the fax. In an ideal world, if you get a higher number, the fax should send or receive faster.
Maybe millions of people die from machine guns, but every year it is used around the world.