Chapter 1 Test ReviewName____________________________Block ____________Date_____________

1. Digital signal / data takes the form of:A. an infinite range of voltage levelsB. specific, discrete voltage levelsC. sine wavesD.

2. Most of the time, the number of states or voltagelevels used by digital circuitry is:A. 2B. 3C. 5D. 7

3. The word that describes the number of statesused by most digital circuitry is:A. quadratureB. binaryC. decimalD. bipolar

4. Pull down in the context of binary logic means:A. loading the +DC supply voltage until itsagsB. discharging a capacitor to groundC. a change from logic 1 to logic 0D. using a resistor or transistor to pull the voltage ata point in the circuit to ground

5. TTL means:A. transistor-transistor loadingB. transformer-transistor levelsC. transistor translation logicD. transistor-transistor logic

6. The standard DC supply voltage for TTL is:A. +1VB. -5VC. +15VD. +5V

7. MOS means:A. metal open sourceB. material oxide semiconductorC. metal oxide semiconductorD. metal octal semiconductor

8. CMOS means:A. capacitive MOSB. combined MOSC. complementary MOSD.

9. The +DC supply voltage for a 4016 CMOS IC is:A. 8V to 15VB. 3V to 15VC. 3V to 8VD. -5V

10. A 74HCT14 is:A. a lower-power, vaster version of TTLB. a standard-CMOS version of a TTL ICC. an IC manufactured in the 17th week of1974D. a CMOS IC that can work with TTLCircuitry

11. The voltage levels or states used in binarycircuitry are commonly called:A. high and lowB. in and outC. 1 and 0D. A and C above

12. Pinout means:A. how long the IC pins areB. which internal circuit points are connectedto which pins of an ICC. which pin must be grounded first when anIC is plugged inD. how much current the IC can supply to its outputTerminals

13. Active low meansA. the low-voltage state represents 1B. the low-voltage state represents 0C. the circuit draws most current when in the0 stateD. 1-0 transitions happen faster than 0-1

14. An undefined state is a voltage that:A. is poorly regulatedB. is higher than the IC's proper powersupply voltage rangeC. oscillates regularly between 1 and 0D. is not high enough to be 1 or low enoughto be 0

15. For TTL circuitry, an undefined voltage is:A. between 0.8V and 2VB. between 1.5V and 3.5VC. between 3.5V and 5VD. between 0V and 2V

16. For CMOS running on a 5V supply, an undefinedvoltage is:A. between 0.8V and 2VB. between 1.5V and 3.5VC. between 3.5V and 5VD. between 0V and 2V

17. The input of a CMOS circuit is essentially:A. a virtual groundB. an open circuitC. an inductanceD. a fuse

18. A CMOS input should never be:A. left floatingB. tied to groundC. tied to +DCD. tied to the output of its own gate

19. Shoot-through occurs:A. when both transistors of a complementarypair are onB. during 0-1 or 1-0 transitionsC. if an input is left floatingD. all of the above

20. ESD is the abbreviation of:A. electromagnetic damageB. electrostatic dischargeC. electrostatic dangerD. electronic destruction

21. ESD shunt diodes:A. drain ESD discharges off to the + rail orgroundB. reroute ESD discharges to the gate'soutputC. reroute ESD charges to a filter capacitorD. short out the power supply during ESDEvents

22. A build-out resistor:A. is in series with a circuit input or outputB. is in series with the power supply railC. is connected between an input andgroundD. is connected across the power supply

23. A 74LS14 IC is:A. A CMOS equivalent of TTLB. slower than standard TTLC. low-power Schottky TTLD. this is a date code