| A | B |
|---|
| UNIVAC | 1951 |
| 1st generation computers | use vaccum tubes, instructions written in binary code commands |
| 2nd generation computers | use transistors, instructions written in English-like commands |
| vaccum tube | an electronic device that controls the flow of electrons in a vacuum |
| transistor | regulate flow and act as a switch for electronic signals. Smaller than vaccum tubes |
| 3rd generation computers | use integrated circuits. One miniature chip replaces thousands of vaccum tubes. |
| 4th generation computers | use microprocessors. A single chip replaces 2,300 transistors or vaccum tube on a single chip. |
| outsourcing | use of components or labor from outside suppliers. |
| offshoring | relocating business processes to lower-cost locations in other countries |
| alpha test | carried out by software manufacturer’s in house team to find errors or bugs. |
| beta test | conducted by a team of off-site testers to expose the software to the widest possible variety of computers and operating system environments. |
| ergonomics | study of safe and efficient environments, particularly working environments |
| RSI | overuse disorders that affect tendons, muscles and nerves. |
| OSHA | sets and enforces standards for safety and health of American workers. |
| 20/20/20 break | Every 20 minutes, take 20 seconds and look 20 feet away. |
