H - Electronic Control Systems Flashcards
A signal that voltage value is on and then off is:
A digital signal.
A signal whose voltage value is constantly variable is called an:
Analog signal.
Signals from ON/OFF switches are:
Digital signals.
Signals from a thermistor sensor are:
Analog signals.
Before they can be used by the central processing unit, analog input signals must be processed in the:
ADC.
All of the components in an ECM are kept at the same pace by the:
Internal clock.
The device that prepares the output data in a form that can be used outside the ECM is called the:
DAC.
A combination of eight binary code bits is called:
A binary word.
Input data can be stored in the:
RAM.
Which type of RAM is connected directly to the battery rather than powered through the ignition switch?
Volatile and keep alive.
The brain of the ECM is called a:
Microprocessor.
Which part of the ECM receives information from the system’s inputs?
Microprocessor.
What kind of memory is used for permanent storage of data?
PROM and ROM.
Random access memory is:
Volatile and non-volatile.
Which type of memory can you take out of the ECM to write new program information to it?
PROM.
Which type of voltage sensor uses a predetermined voltage signal that is sent from the ECM?
Reference voltage sensor.
Which type of voltage sensor produces its own voltage signal?
Voltage-generating sensor.
The output actuators of electronically controlled systems are:
Electric motors, solenoids, and relays.
On-board fault codes can be read directly from the ECM through:
Blinking lights.
Off-board diagnostics are accessed through the use of:
Scanning tools, data link connectors, and scanning tool programs.
When measuring sensitive electronic circuits, you can prevent meter loading from damaging circuits damage, causing inaccurate readings and producing high current flow through sensitive electronic components by using:
High impedance digital meters.
