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What are the materials used to make a calculator today?
Made of plastic, wires, buttons, a computer, and a screen
How did Charles Babbage's Difference engine work?
I have never seen a good diagram, but the device was mechanical, not electrical and would probably resemble an early code machine ( used to make and decode ciphers) or possibly a mechanical (these antedated the juice variety) digital clock the possibility exists it may have used a clockwork, wind up motor, also. read out would be digital as explained, like a mechanical adding machine or the now-rare mechanical digital clocks, which were invented in Germany. I have no further information on the Babbage device, which never was, well a household appliance.
What materials were used to make the first abacus?
== ==
How much does an orthodontics make an hour?
considering that it has to pay rent and they have to pay emploees and materials, they would proabably make abut $452.36 an hour.
How do you make the brackets for an absolute value math problem on the computer?
you don't need to make them. Just solve the problem, then ignore whether its negative or positive, and you have your answer.
