These are the building blocks you will need.
First you must make the screen. Make it as big as you want I am doing a 6x6 screen. Note: pixels will be 2x2
Then you want to make a line like this one block away and on the bottom row.
Then continue this every other block all the way to the top.
Now place redstone torches on the blocks facing the redstone lamps.
Now place blocks above all the redstone torches.
Now place another row of blocks like this.
Now place redstone repeaters on the blocks like this.
Now place another row of blocks behind the other ones like this.
Place this pattern of redstone and repeater on every row of blocks.
Place this pattern of blocks on every row
Now add this pattern of redstone and repeaters to the blocks.
Now add this pattern of blocks to all of the rows.
Add redstone to all the blocks you just placed.
Now add these blocks
Then add these blocks.
Lastly add these blocks.
Then place redstone on all the blocks
Add one block in length to this side it will be the shorter side.
Then put redstone on the blocks.
Add these blocks redstone and repeaters.
Add these blocks.
Add this redstone and repeaters. Note:move the repeater that is on the ground back one block.
Add this redstone and repeaters. Note:make sure you get all the repeaters.
Note:move these two repeaters back one block.
Add this redstone and repeaters.
Copy the last 12 steps on the other side.
Build this connecting to one of the redstone wires.
Then add this.
Finally add this
Then add one to every redstone wire.
Now build the four 3x3 button pads. Note: do not build the black and yellow lines they are just there to show you how far away every thing is.
Add redstone torches to the backs of the pads.
Add this redstone.
Now add this redstone.
Then add this redstone.
Now add this redstone
Finally add this redstone.
Add the last 8 steps to all pads.
Note: we're they meet change it to this.
Add these blocks, redstone and repeaters.
Add these blocks
Now add this redstone and repeaters.
Now redo the last 3 steps on every section.
Now place these blocks and get rid if the ones on the other side.
Then place these repeaters.
Now do the last 2 steps on all 4 sections.
Now destroy this two block Deneb tunnel.
Now add redstone and place repeaters as needed.
You can test by pressing the button and if these lamps turn off then it worked press the button again to turn them on.
Now add this block and the redstone and repeater here.
Now add this tunnel and redstone with repeaters as need again you can test in the same way as before.
Now add this tunnel and redstone add repeaters as needed.
Note if the next button does not work ad a repeater here on both levels.
Add these blocks and tunnel add redstone and add repeaters as needed.
Now add the same thing right above it.
Now your done and you can make what ever you want.