IT Lesson 3 PC Computers

A computer is not an acronym and sometimes abbreviated as comp or 'puter. The term "computer" was originally given to humans (human computers) who performed numerical calculations using mechanical calculators, such as the abacus and slide rule. The term was later given to a mechanical device as they began replacing the human computers. Today's computers are electronic devices that accept data (input), process that data, produce output, and then store (storage) the results.

The first digital computer and what most people think of as a computer was called the ENIAC, built during World War II (1943-1946). Early computers like the ENIAC used vacuum tubes and were large (sometimes room size) and only found in businesses, Universities, or governments. Later, computers began utilizing transistors as well as smaller and cheaper parts that allowed the common person to own a computer.

Source : http://www.computerhope.com/jargon/c/computer.htm

- ความรู้ คอมพิวเตอร์ (ภาษาอังกฤษ)