11. In a comparator, the reference voltage is connected to ________ input terminal and the input signal is applied to ________ input terminal.
(a) only the minus, only the plus
(b) only the plus, only the minus
(c) either the plus or minus, the other
(d) None of the above
12. Which of the following is not a linear/digital IC?
(a) Phase-locked loop
(b) Voltage-controlled oscillator
(c) Passive filter
(d) Comparator
13. Which of the following is (are) the results of improvements built into a comparator IC?
(a) Faster switching between the two output levels
(b) Noise immunity
(c) Outputs capable of directly driving a variety of loads
(d) All of the above
14. What is the function of a ladder network?
(a) Changing an analog signal to a digital signal
(b) Changing a linear signal to a digital signal
(c) Changing a digital signal to an analog signal
(d) None of the above
15. A 339 IC is an example of a fourteen-pin DIP that can be made to function as a ________.
(a) comparator
(b) 555 timer
(c) D to A converter
(d) ladder network
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