The Abacus: the first Computer
The abacus was used as a mathematical model for early electronic computers and so technically it was "the first handheld".
Its Mandarin name is "Suen Pan" also known as "calculating plate". It was invented around 1600 AD in China, however the inventor remains unknown. The Japanese also had a similar version of the abacus that they called "soroban": this was a more elegant version of the Chinese abacus.
During the Medieval period, the West picked up on the abacus. The Russian's abacus is in a horizontal direction while the Chinese and the Japanese's abacus is in a vertical direction: this was due to the fact that the Chinese and Japanese wrote downwards, while the West wrote across.
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Abacus Help Solutions
Free Computer Tune up Tips and Suggestions
Delete cookie files, history files, and temporary internet files.
Go to the Control Panel (Start, Control panel or Start, Settings, Control panel) and double click on Internet Options, under the General tab click on Delete Cookies, Delete Files, and Clear History.
- Delete unnecessary files.
- Empty the recycling bin.
- Delete unneeded e-mails from your inbox and empty your deleted e-mail folder.
- Remove unneeded icons from your desktop.
- Uninstall unnecessary programs.
- Run scandisk to fix file system errors.
- Run Disk Defragmenter to improve system performance. Note: Delete all unnecessary files and programs first.
- Do not use window cleaner on your monitor, this will ruin the anti-glair coating on your monitor.
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