An abacus is a calculation tool used by sliding counters along rods or grooves in order to perform mathematical functions. It is still used for arithmetic and accounting.

However, if the computer is turned on and you use Abacus as a calculator, simply press the “send” button and you will transmit the numerical data at any time from the Abacus directly to the ...

But the first, most basic tool that was used as a computer was the abacus. There are many variations of the abacus, but the simplest one is one you've likely seen before.

The Computer History Museum this week opens a $19 million, 25,000-square-foot building expansion and signature exhibition titled: ” Revolution: The First 2000 Years of Computing.” More than ...