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Who invented the computer?" is not a question with a simple answer. The real answer is that many ________________ (1 - INVENT) contributed to the history of computers. A computer is a complex piece of __________________(2 - MACHINE) made up of many parts, each of which can be considered a separate invention. This series covers many of the major milestones in computer history (but not all of them) with a concentration on the history of ________________(3 - PERSON) home computers. What are the most important inventions from the whole of human history? The wheel, _________________(4 - OBVIOUS), and then…

1. inventors

2. machinery

3. personal

4. obviously