kdohertyDec 2017Strongly recommends
There is also a fantastic video where Cliff Stoll describes the Friden EC-132 calculator and shows off its acoustic delay line here: ▶ this video
in “Acoustic delay line memory (2014)” · View on HN
An astonishing old calculator - Numberphile
An astonishing old calculator - Numberphile on HackerTube: recommended by 1 Hacker News commenter across 1 month, 2017–2023.
Numberphile
Open on YouTubeexplainer · evergreen
Cliff Stoll shows and explains his two Friden EC-132 electronic calculators for Numberphile. The video covers how these early machines worked, including their unusual acoustic delay line memory.
Why Hacker News recommends it
It is the go-to visual explanation of delay-line memory and early electronic calculators whenever the topic comes up.
- people recommended it
- 1
- separate months
- 1
- strong recommendations
- 1
- discussed on HN
- 2017–2023
“There is also a fantastic video where Cliff Stoll describes the Friden EC-132 calculator and shows off its acoustic delay line here”
What HN commenters said
3 Hacker News comments link this video. Each one links back to its thread.
db48xAug 2023Cites it
There were a lot of delay–line memories back in the day. It wasn’t just that they didn’t have memory chips; memory chips hadn’t been invented yet. ▶ this video
in “111,111.1 meters is reliably 1 degree of latitude” · View on HN
major505Oct 2020Cites it
Cool way to store the bits. I saw the other day a video about an old eletronic calculator that stores itens in memory usinglike a piano wire, and microfones, and small speakers, to make the cord vibrate, and store the value. It was the Friden ec-132 ▶ this video
in “The Friden EC-130, one of the world's first electronic calculators” · View on HN
Topics & tags
History of computingRecreational & visual mathComputer architecture & CPUscliff stollfriden ec-132delay line memoryvintage computingnumberphile