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| | Cheap personal computers and PCs |
 | | It was the launch of the VisiCalc spreadsheet, initially for the Apple II and later for the Atari 8-bit family, Commodore PET, and IBM PC that became the "killer app" that turned the microcomputer into a business tool. |
 | | The eventual result was the purchase of several million IBM compatible personal computers all across the government which encouraged many of the government contractors to buy IBM compatibles “to be compatible with the government.” The result was that the “IBM compatible computers”, Intel processors, and Microsoft became the standard. |
 | | Later, Lotus 1-2-3, a combined spreadsheet (partly based on VisiCalc), presentation graphics, and simple database application, became the PCs own killer app. |
| www.computersherpa.com /personal-computer.html (774 words) |
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