Describe how the PLA is different from the PAL.
What will be an ideal response?
The PLA is similar to the PAL but has the additional flexibility of having its AND gates connected to several programmable OR gates. This results in a device that is harder to program than the PAL, but the additional level of logic gates increases the overall propagation delay time.
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Which of the following best describes how power line carrier (PLC) multiplexing takes place from a trailer to a tractor?
A. blue auxiliary terminal in a 7-wire trailer connector is dedicated to data bus transactions B. data is radio frequency (RF) superimposed over the auxiliary hardwire C. data is pulse width modulated (PWM) from trailer to tractor data bus D. data is pulse width modulated (PWM) from tractor to trailer data bus
The maximum fill level for a refillable refrigerant cylinder is:
A) 80% of its volume. B) Refillable cylinders should not be refilled with refrigerant. C) 100% of its volume if the cylinder is rated for that particular refrigerant. D) 70% of its volume.
Wear _____ and _______ when working with refrigerants.
Fill in the blank(s) with the appropriate word(s).
The length of a displacement diagram represents one complete revolution of the cam.
Answer the following statement true (T) or false (F)