The Computer Timeline: Calculators, Maths and Reverse Polish Notation
What happens when you set out to build a pocket calculator? Well in this case it turns out you also accidentally invent desktop computers, and spawn a bunch of CPUs that are still being used today.
Follow along as we go through the thoroughly bizarre story of how trying to do complex maths and fit it in our pockets lead directly to the machine you're using right now to watch this video.
Calculators were originally like computers - huge boxes that required care and maintenance and sat firmly on a desk plugged into the wall. Today everyone wants to own a smartphone, back then everyone wanted a pocket calculator.
The story of trying to cram a whole shoebox of electronics into a pocket involves dodgy corporate dealings, people starting their own companies and deciding that while calculators were nice, being able to program them would be even better.
Part of the difficulty of building a calculator is working out how to understand the maths the operators were entering. A basic four function calculator can be thought of as a simple state machine, but once we get to doing scientific functions or longer multi stage formulae. And this is where a technique known as Reverse Polish Notation comes in.
Blog: https://ncot.uk
Social Media: https://social.ncot.uk
Credits / Attributions
=================
https://en.wikipedia.org/wiki/Wilhelm_Schickard
Wilhelm Schickard 1592–1635. Astronom, Geograph, Orientalist, Erfinder der Rechenmaschine, Tübingen 1978
Replica of Schickards calculating machine
Herbert Klaeren
https://en.wikipedia.org/wiki/Blaise_Pascal
A Pascaline signed by Pascal in 1652
https://commons.wikimedia.org/w/index.php?curid=2542893
Anita MK8 calculator
https://commons.wikimedia.org/wiki/File:Bundesarchiv_B_145_Bild-F038812-0014,_Wolfsburg,_VW_Autowerk.jpg
Bundesarchiv, B 145 Bild-F038812-0014 / Schaack, Lothar / CC-BY-SA 3.0
Intel C1103 - By Thomas Nguyen - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=49532861
Intel 4004 - By the Science Museum - [1], CC BY 4.0, https://commons.wikimedia.org/w/index.php?curid=133513690
Intel 8008 - By Konstantin Lanzet - CPU Collection Konstantin LanzetCamera: Canon EOS 400D, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=5694177
Intel 8080 - By The Science Museum UK - [1], CC BY 4.0, https://commons.wikimedia.org/w/index.php?curid=133514392
Intel 8086 - By Thomas Nguyen - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=46809082
6502 - CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=91538
Zilog Z80 - By The original uploader was Damicatz at English Wikipedia. - Transferred from en.wikipedia to Commons., CC BY 2.5, https://commons.wikimedia.org/w/index.php?curid=1830432
Busicom logo - By Comrade-yutyo - Own workThis file was derived from: Busicom back 1.jpg:, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=126212890
http://www.vintagecalculators.com/html/busicom_141-pf.html
Intel https://commons.wikimedia.org/wiki/File:Intel_Employees_at_Bowers_Campus_In_Santa_Clara.jpg
HP-35 - By Mister rf - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=83581216
Видео The Computer Timeline: Calculators, Maths and Reverse Polish Notation канала NCOT Technology
Follow along as we go through the thoroughly bizarre story of how trying to do complex maths and fit it in our pockets lead directly to the machine you're using right now to watch this video.
Calculators were originally like computers - huge boxes that required care and maintenance and sat firmly on a desk plugged into the wall. Today everyone wants to own a smartphone, back then everyone wanted a pocket calculator.
The story of trying to cram a whole shoebox of electronics into a pocket involves dodgy corporate dealings, people starting their own companies and deciding that while calculators were nice, being able to program them would be even better.
Part of the difficulty of building a calculator is working out how to understand the maths the operators were entering. A basic four function calculator can be thought of as a simple state machine, but once we get to doing scientific functions or longer multi stage formulae. And this is where a technique known as Reverse Polish Notation comes in.
Blog: https://ncot.uk
Social Media: https://social.ncot.uk
Credits / Attributions
=================
https://en.wikipedia.org/wiki/Wilhelm_Schickard
Wilhelm Schickard 1592–1635. Astronom, Geograph, Orientalist, Erfinder der Rechenmaschine, Tübingen 1978
Replica of Schickards calculating machine
Herbert Klaeren
https://en.wikipedia.org/wiki/Blaise_Pascal
A Pascaline signed by Pascal in 1652
https://commons.wikimedia.org/w/index.php?curid=2542893
Anita MK8 calculator
https://commons.wikimedia.org/wiki/File:Bundesarchiv_B_145_Bild-F038812-0014,_Wolfsburg,_VW_Autowerk.jpg
Bundesarchiv, B 145 Bild-F038812-0014 / Schaack, Lothar / CC-BY-SA 3.0
Intel C1103 - By Thomas Nguyen - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=49532861
Intel 4004 - By the Science Museum - [1], CC BY 4.0, https://commons.wikimedia.org/w/index.php?curid=133513690
Intel 8008 - By Konstantin Lanzet - CPU Collection Konstantin LanzetCamera: Canon EOS 400D, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=5694177
Intel 8080 - By The Science Museum UK - [1], CC BY 4.0, https://commons.wikimedia.org/w/index.php?curid=133514392
Intel 8086 - By Thomas Nguyen - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=46809082
6502 - CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=91538
Zilog Z80 - By The original uploader was Damicatz at English Wikipedia. - Transferred from en.wikipedia to Commons., CC BY 2.5, https://commons.wikimedia.org/w/index.php?curid=1830432
Busicom logo - By Comrade-yutyo - Own workThis file was derived from: Busicom back 1.jpg:, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=126212890
http://www.vintagecalculators.com/html/busicom_141-pf.html
Intel https://commons.wikimedia.org/wiki/File:Intel_Employees_at_Bowers_Campus_In_Santa_Clara.jpg
HP-35 - By Mister rf - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=83581216
Видео The Computer Timeline: Calculators, Maths and Reverse Polish Notation канала NCOT Technology
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