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4 MICROCOMPUTER INSTRUMENTATION AND CONTROL
Quiz for Chapter 4
1. The parts of a computer include 6. According to the Nyquist sam-
a. CPU pling theorem, a signal must be
b. memory sampled at
c. input/output a. the highest frequency in the
d. all of the above signal
b. at least twice the highest fre-
2. What does a microcomputer use
quency in the signal
to interface with other systems?
c. less than half the lowest fre-
a. parallel interface
quency in the signal
b. analog-to-digital converter d. more than half the lowest fre-
c. digital-to-analog converter
quency in the signal
d. all of the above
7. What advantages does digital sig-
3. Which control line do peripherals
nal processing have over analog
use to get the computer’s atten- signal processing?
tion?
a. digital is more precise
a. power line b. digital doesn’t drift with time
b. read/write line
and temperature
c. interrupt line c. the same digital hardware can
d. clock line
be used in many filters
4. What is a data bus? d. all of the above
a. a set of wires that carries bits
8. What advantage does analog signal
to or from the processor and processing have over digital signal
memory or peripherals
processing?
b. a large yellow vehicle for a. analog is always less expensive
carrying data
c. a bus carrying addresses b. the same analog hardware can
be used for many filters
d. a set of wires for control
c. analog is sometimes less
signals
expensive
5. What are computers used d. high-frequency signals can
for in instrumentation only be filtered with analog
systems? filters
a. signal processing 9. What type of memory is used to
b. sensor, actuator, and display
permanently store programs?
linearization
c. display formatting a. RAM
b. ROM
d. filtering c. MAP
e. all of the above
d. RPM
144 UNDERSTANDING AUTOMOTIVE ELECTRONICS
