1. The abacus was the first human-made numerical calculator and was invented in    B.C.

2. Aside from a brain, the abacus was the first device that could compute  .

3. The world's first electronic computer was invented in what year?  .

4. The first electronic computer was called the .

5. In 1959 computers became smaller due to a device called a .

6. The first microprocessor was invented in .

7. Microprocessors allow computers think more .

8. IBM introduced its first desktop computer,  called the

9. It was introduced in what year? 

10 More hard drive space allowed for bigger and more advanced . 

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