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Ch 73 Computer Fundamentals

Total questions: 21

Worksheet time: 11mins

Name
Class
Date
1.

What unit of electricity is used as a signal for a computer? (a)  

Choose from the below words

Ohm

Volt

Ampere

Watt

2.

The four basic computer functions include .

a)

sensing, calculating, actuating, and processing

b)
input, processing, storage, and output
c)

writing, processing, printing, and remembering

d)

data gathering, processing, output, and evaluation

3.

All OBDII vehicles use what type of read-only memory?

a)
ROM
b)

PROM

c)

EEPROM

d)

EPROM

4.

The "brain" of the computer is the .

a)

AD converter

b)

RAM

c)
CPU
d)

PROM

5.

Computer speed is measured in .

a)
clock speed (Hz)
b)

bytes

c)

voltage

d)

baud rate

6.

Which item is a computer input sensor?

a)

RPM

b)

Throttle position angle

c)

Engine coolant temperature

d)
All of the above
7.

Which item is a computer output device?

a)

Fuel injector

b)

Evaporative emission control solenoid

c)

Transmission shift solenoid

d)
All of the above
8.

The SAE term for the vehicle computer is .

a)
PCM
b)

ECM

c)

ECU

d)

Controller

9.

What two things can a vehicle computer actually perform (output)?

a)

Calculate and vary temperature

b)

Turn something on and off

c)

Control fuel and timing

d)

Store and process information

10.

Analog signals from sensors are changed to digital signals for processing by the computer through which type of circuit?

a)

Analog-to-digital converter

b)

Digital

c)

Analog

d)

PROM

11.

The ratio of on time relative to the period of the complete cycle is the .

a)
duty cycle
b)

pulse width modulation

c)

amplitude

d)

frequency

12.

Which computer function is defined as a voltage signal from a sensor or switch?

a)

Storage

b)

Input

c)

Process

d)

Output

13.

Which computer function describes how the computer handles inputs?

a)

Process

b)

Output

c)

Input

d)

Storage

14.

Which computer component generates a steady stream of one-bit long voltage pulses?

a)

Clock generator

b)

Capacitor

c)

Volatile memory

d)

Central processing unit

15.

Which term describes the process of manually adjusting variables such as speed, load, and spark timing to determine the optimum output settings for the computer?

a)

Signal conditioning

b)

Engine mapping

c)

Reflashing

d)

Performance programming

16.

Which component contains the information in the computer that is specific to the particular model vehicle?

a)

Analog to digital converter

b)

EEPROM

c)

Transistor

d)

RAM

17.

Which sensor is used to measure manifold vacuum?

a)

A) MAP

b)

B) RPM

c)

C) ECT

d)

D) TP

18.

Which term describes the speed of data transmission?

a)

Baud rate

b)

Oscillator speed

c)

Frequency

d)

Pulse width modulation

19.

Refer to this diagram of a fuel pump control circuit. What type of a driver circuit is used in this circuit?

a)

Duty cycle driver circuit

b)

Low-side driver circuit

c)

PWM driver circuit

d)

High-side driver circuit

20.

A fuel injector can be an input or an output component. True or False?

a)

True

b)

False

21.

The throttle position sensor is an output component. True or False?

a)

True

b)

False