The earliest existence of a modern day computer's ancestor was the abacus. These date back to almost 2000 years ago. It is simply a wooden rack holding parallel wires on which beads are strung. When these beads are moved along the wire according to "programming" rules that the user must memorize, all ordinary arithmetic operations can be performed. The next innovation in computers took place in 1694 when Blaise Pascal invented the first "digital calculating machine". It …
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…thousands of companies, making everything from multi-million dollar high-speed supercomputers to printout paper and floppy disks. It employs millions of people and generates tens of billions of dollars in sales each year. Surely, the computer has impacted every aspect of people's lives. It has affected the way people work and play. It has made everyone's life easier by doing difficult work for people. The computer truly is one of the most incredible inventions in history.