Problem

Design a circuit using parts from your lab kit that will produce the following waveform: Figure $1.$ Stair$-$Step Waveform

The waveform should be at $3$ V for $(1)/(3)$s$,2$V for $(1)/(2)$s$,$ and then $1$ V for $1$ s $.$ This stairstep should repeat indefinitely $($the initial startup values you may ignore$).$ You should have the same area under each section of the stairstep, as shown in Figure $1$ where the blue, yellow, and green rectangles are all of equal area. The circuit should be powered by the $+5$ V and $-5$ V power supplies available through the AD$2.$ You may not use the function generator in any way.