Uploaded June 2022 | Updated September 2026, 2 weeks ago

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The Instructo Paper Computer, created by Fred C Matt and published by McGraw Hill in 1979.

This is Episode 3 of my series on paper computers. Please let me know if you have any information about any paper computers that I could look at in future episodes!

#papercomputer
#mrmatt


Chris Staecker webarea: http://cstaecker.fairfield.edu/~cstaecker


See the manual, and download & print your own Instructo Paper Computer: http://cstaecker.fairfield.edu/~cstaecker/machines/instructo.html

arcade board picture from arcade-museum.com

NWC cart from some sleazy online counterfeiter

Math teacher photo from flickr.com/photos/117994717@N06/32202326997, licenced CC-BY-SA 2.0

Atari photo from
commons.wikimedia.org/wiki/File:Atari_2600_w_zasobach_muzeum_Gry_i_Komputery_Minionej_Ery_we_Wroc%C5%82awiu.jpg
by Wikimedia user Wojciech Pędzich, licensed CC-BY-SA 4.0

My answers for the exercises:
Easy:
00: JIBD 10
01: STOP

10: ENIB 90
11: LDRA 90
12: MULA 50
13: STRA 90
14: PROA 90
15: JUMP 00

50: 2

Medium:
00: JIBD 10
01: STOP

10: ENIB 90
11: ENIA 91
12: LDRA 91
13: JANZ 15
14: JUMP 00
15: PROA 90
16: SUBA 50
17: JUMP 13

50: 1

Hard:
00: PROB 90 (b)
01: PROA 91 (x)
02: LDRA 90
03: EXPA IN (now A is b^e)
04: CPRA 91
05: JALT 10
06: INDS 50 (this subtracts from the index)
07: PROA IN

10: INDA 50
11: JUMP 02

50: 1