|
It's inventor is unknown, but the abacus is often referred to as the "first computer" because it was used as a mathematic model for early electronic computers.
|
www.qi-journal.com/culture.asp?-token.SearchID=Abacus
www.qi-journal.com/culture.asp?-token.SearchID=Abacus
|
|
|
In 1958, a Taiwanese man developed a four-tier abacus, essentially consisting of a Japanese soraban atop a; Chinese suan pan, and capable of performing extremely complex, high value calculations, though the older suan pan abacus remains the one most commonly used in the early twenty-first century.
|
www.encyclopediawebsite.com/disc/entries/abacus.pdf
www.encyclopediawebsite.com/disc/entries/abacus.pdf
|
|
|
What is an abacus? An abacus is a device used for addition and subtraction, and the related operations of multiplication and division. It does not require the use of pen and paper, and it's good for any base number system. ... To do simple arithmetic on the bead abacus, you first must determine what base you want to use,
|
fenris.net/~lizyoung/abacus.html
fenris.net/~lizyoung/abacus.html
|
|
|
|
AD c300 The Chinese begin development of the abacus as a mathematical device c500 The abacus is used in Europe; ... The next logical step was to produce the first "personal calculator"—the abacus—which used the same concepts of one set of objects standing in for objects in another set, but also the concept of a...
|
www.ideafinder.com/history/inventions/abacus.htm
www.ideafinder.com/history/inventions/abacus.htm
|
|
|
The abacus was first used in China about 500 B.C. The abacus is used to do math such as addition, subtraction, multiplication, and division. The beads on the abacus are used for numbers. You can slide the beads up and down to show the numbers.
|
www.fi.edu/fellows/fellow1/apr99/abc/a.htm
|
|
How To Use An Abacus ; William Gordon John Hope Academy; 5515 S. Lowe ; Chicago, The first column on the right is the ones' column; the second column is the tens' column; the third column is the hundreds'; the fourth column is the thousands'; and so on. The ones' column represents numbers from one to nine.
|
www.iit.edu/~smile/ma9007.html
|
|
1. When was the abacus first used? By who? ... 3. What terminology is used to name to top and bottom halves of an abacus? ... The abacus is a tool that still generates interest. It has been used for nearly 2500 years. Not only can it be handy as a calculating device, it is a great reinforcer in understanding place value.
|
www.meridian.wednet.edu/~dshick/wabacus.htm
www.meridian.wednet.edu/~dshick/wabacus.htm
|
|
Stephen White's 'A Brief History of Computing' - Complete Timeline ... The abacus was first used by the Babylonians as an aid to simple arithmetic at sometime around this date. The abacus in the form we are most familiar with was first used in China in around 1300 A.D.
|
trillian.randomstuff.org.uk/~stephen/history/timeline.h...
trillian.randomstuff.org.uk/~stephen/history/timeline.html
|
|
From the Greek word abax meaning calculating board or calculating table, the Chinese Abacus was invented during the Yuan Dynasty, 1280-1368 AD. The Chinese Abacus is often referred to as the first computer. The Chinese abacus is used to add, subtract, multiply and divide, as well as figuring fractions and square roots.
|
www.asianideas.com/abacus.html
www.asianideas.com/abacus.html
|
|
