Review Questions

1. TRUE or FALSE? Nonmetals such as carbon and oxygen tend to be good conductors of electricity.

2. TRUE or FALSE? A semiconductor is a metal that can be manipulated to be either a good or a bad conductor of electricity.

3. TRUE or FALSE? A circuit is a collection of transistors (and possibly other electronic de-vices) wired together to produce a particular behavior.

4. TRUE or FALSE? NMOS and PMOS were two competing companies that manufactured microchips in the early 1960s.

5. TRUE or FALSE? If there is no electrical current on the input wire to a NOT gate, then there will be current on its output wire.

6. TRUE or FALSE? The sum of the binary numbers 1012 and 12 is 1102.

7. TRUE or FALSE? A flip-flop is a circuit that serves to store a single bit.

8. TRUE or FALSE? Jack Kilby and Robert Noyce are credited with independently inventing the integrated circuit.

9. TRUE or FALSE? The main reason that workers wear protective clothing when manufac-turing integrated circuits is to protect them from exposure to dangerous chemicals.

10. TRUE or FALSE? Moore's Law dictates that integrated circuitry must be manufactured out of silicon, as opposed to other semiconductors such as germanium.