how many of the pins would it take up?
The 74HC595 is the standard choice for that sort of application.
Yes, you will need 180 to 220 ohm current limit resistors, 1 for each segment.You will need 100nF caps, one for each shift register's Vcc pin.You will need a ULN2003 to buffer the common cathode signals - each cathode will have up to 160mA flowing thru it if all 8 segments are on.The shift register, or arduino pin, will source current into the anode segments, the ULN2003 will sink current.
I would like to use a 4 digit 7 segment display for a project at university and we have been given an arduino nano.
... will I need any resistors or other components?
... Is this the buffer I am looking for?
... Would it be possible to use this buffer instead?
Would it be possible to use this buffer instead?
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