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12-17

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

Which of the binary numbers below is equal to 6 in the decimal system of notation?
a.
0111
c.
0110
b.
1110
d.
1111
 

 2. 

In which type of logic gate must both inputs be “on” to produce an output voltage?
a.
NOT
c.
AND
b.
NAND
d.
OR
 

 3. 

Which of the following is not a type of computer memory?
a.
ROM
c.
PROM
b.
RAM
d.
PRAM
 

True/False
Indicate whether the statement is true or false.
 

 4. 

The interaction between the different computers in a vehicle's computer network is referred to as multiplexing.
 

 5. 

The PROM is the only part of some vehicle computers that is commonly serviced.
 

 6. 

The three stages of computer operation are input, programming, and output.
 

 7. 

Automotive computers can be located in the passenger or engine compartment, in the trunk, or under the seats.
 

 8. 

An active sensor is one that generates its own voltage signal.
 

 9. 

The term microprocessor means small computer.
 

 10. 

Wheel speed sensors provide necessary information for the antilock braking system.
 

Matching
 
 
Match the following terms and identifying phrases.
a.
ignition module
d.
power control module
b.
climate control module
e.
powertrain control module
c.
instrumentation module
f.
vehicle control module
 

 11. 

Controls or increases current flow between a few sensors and the main computer.
 

 12. 

Large, powerful computer that coordinates functions such as engine, transmission, and traction control.
 

 13. 

Uses sensor inputs to control ignition timing and spark plug firing.
 

 14. 

Small computer that uses sensor inputs to operate a digital dash display.
 

 15. 

Controls operation of the heating, ventilation, and air conditioning systems.
 

 16. 

Powerful computer used to control and monitor the engine and transmission.
 

Completion
Complete each statement.
 

 17. 

______________________________ are output devices that control part operation in response to a signal from the computer.
 

 

 18. 

A computer ______________________________ diagram is a simple drawing that shows how sensors, actuators, and the computer interact.
 

 

 19. 

A vehicle sensor is a(n) ______________________________ that changes a condition (such as temperature, pressure, or movement) into an electrical signal.
 

 

 20. 

A passive sensor depends on an external source of ______________________________ to return a signal to the computer.
 

 

 21. 

The small dc motor used to produce an output by moving parts is called a(n) ______________________________ motor.
 

 

 22. 

A(n) ______________________________ sensor uses light emitting diodes and photo diodes to produce a digital signal.
 

 

 23. 

A(n) ______________________________ signal changes gradually in strength. It produces a curved or irregular wave on an oscilloscope.
 

 

 24. 

The amount of voltage present in a computer signal (wave) is described as the signal ______________________________.
 

 

 25. 

A(n) ______________________________ used in a computer increases the strength of signals from input devices.
 

 



 
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