Human folly for 02017-04-30

older newer index

• (gist.github.com):

  the first version of #Redis, a 300-line Tcl script

• Index (immersivemath.com):

  Immersive Linear Algebra, a “linear algebra [#ebook] with fully interactive figures”. Apparently proprietary. #explorable-explanations

• Item (news.ycombinator.com):

  discussion thread about Immersive Linear Algebra. #explorable-explanations

• Playlist (youtube.com):

  highly recommended #video series on linear algebra by 3Blue1Brown

• Welcome to dspillustrationscom (dspillustrations.com):

  #explorable-explanations of #DSP in Python using Jupyter

• Traits (scg.unibe.ch):

  introduction to traits as an alternative to classes, as used in Rust, for example. #OOP

• Ertl paf (complang.tuwien.ac.at):

  #PDF #paper by Anton Ertl about “Portable #asm #Forth” as an UNCOL

• New project PDP 8i replica (obsolescenceguaranteed.blogspot.com.ar):

  emulating a #PDP-8 with SIMH on a Raspberry Pi behind a fake PDP-8/i front panel

• Yourown SBC (grc.com):

  another #PDP-8 single-board computer kit, this time using the no-longer-made Harris Semiconductor HD6120 PDP-8-on-a-chip

• FAQs (homepage.cs.uiowa.edu):

  #history of the #PDP-8 and #Data-General, plus details on how to program the 8; mentions that the HD6120 could be clocked at 10MHz

• PDP 8s (ricomputermuseum.org):

  The Rhode Island Computer Museum has a PDP-8/S, the bit-serial version of the #PDP-8. It almost runs, and they gave up on fixing it in 2013.

• (youtube.com):

  #video of the RICM #PDP-8 processing a paper tape

• (computerhistory.org):

  #PDP-8 brochure from 1965 showing how computers were sold then. #history

• (sarabander.github.io):

  Bander has made this web version of #SICP look very nice, with better diagrams

• Isicp (xuanji.appspot.com):

  #SICP with a #Scheme REPL in the browser. #explorable-explanations

• Sargent Greenleaf s amp g 951 padlock (securitysnobs.com):

  the Sargent & Greenleaf 951 is a heavy-duty padlock that weighs 2kg and costs US$1360 (!)

• Man jailed indefinitely for refusing to decrypt hard drives loses appeal (arstechnica.com):

  #USA #privacy #human-rights case of #Francis-Rawls continues; he remains jailed for contempt of court for saying he doesn’t remember the #crypto keys to his disks

• 1995237 aca no silbamos a la mujeres El cartel anti acoso en una Obra en construccion (lanacion.com.ar):

  Construction site puts up a poster saying “We don’t whistle at women here”

• The eigenvector of why we moved from language X to language y (erikbern.com):

  People blog about when they switched programming languages; analysis of the results predicts that 16% of everyone will go to #Golang and 14% will end up in C (and 13% Java, 12% C++, 9% Python). Similarly, #React is hotter than Angular or even Vue.js, and MySQL beats even Postgres.

• Wo2014028899A1 (google.com):

  Ultrasonic digital modem patent for encrypted data above 17kHz. #patents

• Bluetooth Bluetooth low energy (st.com):

  ST’s #BLE #hardware power efficiency table

• MISC nrf24 BLE (doc.lijun.li):

  another post on bitbanging #BLE on nRF24l01+ #hardware

• Learn more (learn.adafruit.com):

  Adafruit’s Trinket #hardware bitbangs #USB with the open-source V-USB library, which supposedly will even run on an ATTiny85

• (ncbi.nlm.nih.gov):

  “Effect of calcium supplements on risk of myocardial infarction and cardiovascular events: meta-analysis”, 2010 #medicine #paper showing that calcium supplements are dangerous; 95% confidence interval for the hazard ratio of myocardial infarctions was 1.02 to 1.67

• (ncbi.nlm.nih.gov):

  2011 #medicine #paper on a randomized clinical trial of calcium supplements in “community dwelling postmenopausal women”. Found supplementation increased the risk of myocardial infarction and of stroke, though the 95% confidence intervals barely exclude the null hypothesis.