I need to implement a pull-down resistor for a project, but I am unsure of what resistor to buy. My circuit deals with 5v inputs. Essentially, I am trying to make this: keypad scanner.
Here is a store where I can choose from 1/4, 1/2, 1W, etc resistors:Creatron Inc.
Which one would be the best?
Also, in the circuit in the link above, I am unsure if there needs to be a VCC. I assume the input pins C0, C1, C2 are enough, but please correct me if I am wrong.