Because, unlike a simple string of lights in a series circuit, these are all arranged in a parallel circuit. And you can think of a parallel circuit as having several different routes that all run ...

The total resistance of a number of resistors in series is equal to the sum of all the individual resistances. In this circuit the following applies. When resistors are connected in parallel ...

After reading the latest hackit post, [Ben] sent in this older, but simple logic ... The circuit uses a HC245 octal bus transceiver to feed the 8 data lines on the parallel port.