Chris Staecker
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chrisstaecker.bsky.social
Chris Staecker
@chrisstaecker.bsky.social
Mathematician, Z-list YouTuber.
Reposted by Chris Staecker
Here you go. It was a properly produced thing, but I don’t know by whom. Here it is on a piece of A4 paper. It was just transparent enough to pencil trace over pictures, and the pencil could be washed off. As you can see, I was into maps.
November 12, 2025 at 5:15 PM
Very cool- I'd love to see it! Hard to google since there's lots of keyboard overlays. Was it an official product? Or home-made?
November 12, 2025 at 12:17 PM
Thanks- I have some experience making graph paper knockoffs...
faculty.fairfield.edu/cstaecker/ma...

Do you know how large Tecmo's original sheets were? They seem to be approximately the same aspect ratio as US letter, but the grid size when printed is super-fine. So maybe they used bigger paper?
Chris Staecker: K+E Graph Sheets
These are my own replicas of a few fancy sheets of graph paper made by the Keuffel & Esser Company in the 1960s.
faculty.fairfield.edu
November 10, 2025 at 7:37 PM
Very cool- I'll have to check but I'm pretty sure I don't have this. Would appreciate a nice scan sometime if it's possible! Given how scarce the graphanalogue is, the inserts must be impossibly rare- i've never even heard of it.
November 10, 2025 at 7:32 PM
Nice! I hope you didn't pay too much. And I'm sorry to say that I'm not sure what you're talking about! I have a graphanalogue with instructions, but I don't know about the graph paper insert. Is it described in the instructions? (I'm not home now so I don't have mine handy)
November 10, 2025 at 7:20 PM
Download & print vectorized PDF which can scale super big: faculty.fairfield.edu/cstaecker/ma...
Chris Staecker: Tecmo graph paper
This is a replica of graph paper made in house at Tekhan Ltd (later Tecmo) in the early 1980s for development of 8-bit games, in particular for Famicom and NES.
faculty.fairfield.edu
November 10, 2025 at 7:07 PM
I incorrectly said in my video that Lieberthal never mentioned any connection between the abacus and Chisanbop. Here he does draw a connection, and suggests that chisanbop was inspired by the abacus.
October 29, 2025 at 10:03 AM
The text does not explain the origins of Chisanbop (Sung Jin and Hang Young Pai), but it does associate the method with the structure of the abacus. This description appears in Lieberthal's book as well.
October 29, 2025 at 10:03 AM
The art is all redone- I like it a lot better than the original. Thanks to Ed's friend for sending it to me!
October 29, 2025 at 10:03 AM
A typical new video will lose me 3 or 4 subscribers in the first day or so, but eventually gains me subscribers as new viewers see it from recommendations.
The ones who watch immediately after I post are all subscribers already, so I can never gain subs from that audience- only lose a few.
October 24, 2025 at 2:54 PM
@jaapsch.net has a video about it, although I'm not sure exactly how the "SEE calculator" is related to the "Pascal-Type Calculator". They are obviously the same thing, but the SEE says 1968 on it, and this says 1984. Did Burt Harrison buy the design? I don't know.
youtu.be/gwoIRgWmohE?...
The Sterling Dial-A-Matic Adding Machine
YouTube video by Jaap Scherphuis
youtu.be
October 23, 2025 at 5:18 PM
"Think of other things"
October 23, 2025 at 5:18 PM
we call it "sneaky jeez"
October 22, 2025 at 6:18 PM
I assume they will lend without expecting interest in return?
October 22, 2025 at 3:50 PM