Description : How may R-S FFs be constructed?
Last Answer : By cross-coupling NAND or OR gates.
Description : . How many R-S FFs are required to store the number 1001012?
Last Answer : Six.
Description : How many FFs would be required for an 8-bit shift register?
Last Answer : Eight.
Description : . How many FFs are required to count down from 1510?
Last Answer : Four.
Description : If the specified state is OFF, how many FFs may be off at one time?
Last Answer : One.
Description : . What type of counter has clock pulses applied to all FFs?
Last Answer : Synchronous.
Description : J-K FFs used in counters are wired to perform what function?
Last Answer : Toggle.
Description : What is the purpose of using T FFs?
Last Answer : To divide the input by 2.
Description : . What type of FF can be used as an R-S, a T, or a D FF?
Last Answer : J-K flip-flop.
Description : For an R-S FF to change output conditions, the inputs must be in what states?
Last Answer : 1 and 0, or opposite states.
Description : What must be the logic state of R and S to produce the TRUE output?
Last Answer : Both must be 1s (HIGH) at the same time.
Description : What is the Boolean expression for the output of an AND gate that has R and S as inputs?
Last Answer : f = RS.
Description : What type of gate is represented by the output Boolean expression R T Å ?
Last Answer : Exclusive NOR (X-NOR).
Description : What is the value of Z in a series ac circuit where XL = 6ohms, XC = 3ohms, and R = 4ohms?
Last Answer : X = XL – XC or X = XC - XL
Description : What is the output Boolean expression for a NOR gate with R and T as inputs?
Last Answer : (R +T)’
Description : What are the complements of the following terms? a. Q b. R c. V d. Z
Last Answer : a. Q’ b. R’ c. V’ d. Z’
Description : what should be the minimum wattage ratings of R 3 and R 5 ?
Last Answer : R3 = 2 watts; R5 = 6 watts.
Description : what is the purpose of the series-parallel network R 3, R 4, and R5?
Last Answer : The series-parallel network drops the remaining source voltage and is used to take the place of a single resistor (75 ohms) when the required ohmic value is not available in a single resistor.
Description : A series circuit consisting of three resistors has a current of 3 amps. If R1 = 20 ohms, R2= 60 ohms, and R 3 = 80 ohms, what is the (a) total resistance and (b) source voltage of the circuit?
Last Answer : (a) 160 ohms. (b) 480 ohms
Description : The R x 100 resistance selection on an ohmmeter has what amount of resistance compared to the R x 10 selection?
Last Answer : 1/10.