I guess this would be considered to be pixel art, but I have no clue what Isometric is, so if any of you pixel-artists out there want to correct me, please do XD

So yeah, this random kid in my Spanish class gave me his calculator because he didn't need it any more, and this happened XD
Took a total of three days to do (in my spare time in 3-4 minute incriments XD)

Simple Guide on How to Draw With a TI-83 or TI-84 (any versions of the two)

TO DRAW THE LINES: Hit 2nd, then hit PRGM. Hit the up arrow once, then hit ENTER where it says A: Pen, and it should take you to the screen that shows you your graph. Press ENTER to start drawing, using the arrow keys to guide the construction of your line. Hit ENTER again to discontinue the line. To clear out the grid (x and y axis), Hit 2nd, hit the format button in the middle of the top row (directly under the screen), go down, and turn both Coord and Axes off. Hit Enter. Then repeat the first couple of steps, and your grid-screen should lack a grid; it should be a blank screen! Practice using the pen tool and the other tools under the DRAW application.

HOW TO DELETE PIXELS: Hit 2nd, select PRGM, right-arrow to the POINTS column, and go down and select 2: Pt-Off(. If it takes you to your grid, you're all peachy-keen, but it may take you to the main calculator equation screen. No problem here, just hit 2nd, PRGM, up arrow, ENTER on A: Pen, then repeat the above steps. Once you're at your picture, move your cursor over those pesky pixels and select enter. This tool doesn't make a continuous line of erasing, so each pixel you want to remove is its own separate press of the ENTER key. Once you're done with this and want to get back to drawing... well, you should get the idea by now.

SAVING YOUR PICTURES: Okay, let me start off by saying your calculator can only save ten pictures. I know, a bummer, right? Ah well, you've gotta work with what you've got. To save a picture, hit 2nd, PRGM, right-arrow twice until you're under the STO column. The first option is StorePic. If you're saving your picture, select this application via the ENTER key. It should pop up with"StorePic" in the main calculator equation screen. Put a number ranging from 0-9 in and hit ENTER. Now your picture is saved and stored. You can clear your picture without fear of losing it. If you want to bring your picture back up to show the world, hit 2nd, PRGM, right-arrow twice until you're at the STO column, go down to 2:RecallPic, select it with ENTER, and it should pop up with "RecalPic" in the main calculator equation screen. Enter in the number you saved your picture under, hit ENTER, and it will take you directly to the screen with your picture on it.

Tell me if you have any issues with my instructions. I tried to make them as clear as possible, but I can help you out if you can't seem to get it to work X3

Issac belongs to me, Calculators belong to some math dude, the DRAW tool on said calculators belong to some epic guy XD