The three principal types of control logic are ______________________ logic, as used in solid-state control such as processors or variable-speed drive controllers, and ________________________________ and _______________________ logic (also referred to as “_________________________ logic” or “________________________ logic”), both of which are used in standard ladder-diagram control schemes.
A) wired; pushbutton and relay; ladder; analog
B) digital; pushbutton and relay; wired; ladder
C) analog; pushbutton and relay; wired; graph
D) none of the answers
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Answer:B
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