Hello all. I'm rebuilding an old project I did in college and I'm trying to understand why I used the resistors I used. The real reason I chose these resistors was because everyone else in the class was using them, but now I want to really learn. Anyway, I'm using port2 pins on the MSP430FG4618/F2012 Experimenter's Board connected to the inputs of 74hc374n flip-flops. The output of the flip-flops are connected to 470 ohm resistors which are then connected to segments on a 7-segment display. I remember that the voltage supplied to flip flops and 7-segs was 3.3V.
I'd like to understand why resistors are needed and how one can determine what values for the resistors are needed based on the data on datasheets.
http://www.ti.com/tool/MSP-EXP430FG4618
I'd like to understand why resistors are needed and how one can determine what values for the resistors are needed based on the data on datasheets.
http://www.ti.com/tool/MSP-EXP430FG4618
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