Adding Sine Waves with Shift Registers

[Tacoman1998]

Hi,

I'm fairly new to LV and am stuck on an assignment for school. I am supposed to build a for loop that adds sin waves together in order to make a square wave. The assignment calls for using "a shift register and an addition block to add each waveform to the previously generated waveforms.  Note that we are adding the waveforms, not appending the waveforms." Can someone explain what that means? I do not know how to use the shift registers to add waveforms. 

[altenbach]

to add signals, use the add primitive from the numeric palette. place the result in a shift register so you can add a new signal to the previous one in the next iteration. Check your class notes.

[altenbach]

Sometimes searching the forum helps too.