Jun 202019
 
Abraham Jakub Stern - 4 function + root

https://polska.pl/science/famous-scientists/abraham-stern-17691842-does-anyone-have-calculator/ Home Dreamers People Internet Modern CPU Calculating Tools Mechanical Calculators Babbage Portrait of Abraham Stern (with one of his calculating machines) from 1823, artist Jan Antoni Blank The problem with the world is that the intelligent people are full of doubts, while the stupid ones are full of confidence. Charles Bukowski Abraham Jakub Stern […]

 Posted by at 4:52 am
Jun 072019
 
Who Invented the Microprocessor?

https://www.computerhistory.org/atchm/who-invented-the-microprocessor/ Who Invented the Microprocessor?  David Laws Sep 20, 2018 Curatorial Insight, Remarkable People Intel Pentium microprocessor die and wafer The microprocessor is hailed as one of the most significant engineering milestones of all time. The lack of a generally agreed definition of the term has supported many claims to be the inventor of the microprocessor. The original […]

 Posted by at 6:15 pm
May 242019
 
Ronald Dekker Flyback Converters

https://www.dos4ever.com/flyback/flyback.html Flyback Converters for Dummies A simple flyback converter high voltage power supply for NIXIE tubes. Ronald Dekker Special thanks to Frans Schoofs, who really understands how flyback converters work introduction What you need to know about inductors The boost converter A simple boost converter high voltage supply for NIXIEs An inductor test bench What […]

 Posted by at 5:42 am
May 202019
 
THE ON-LINE MUSEUM RechenMaschinen, RechenStäbe,

http://public.beuth-hochschule.de/~hamann/ Prof. Dr.-Ing. Christian-M. Hamann ( verantwortlich für den Inhalt dieser HomePage ) Spezialgebiete: ( ehem. Leiter des Labors für Künstliche Intelligenz ) LISP & PROLOG Anwendung Expertensysteme Evolutionsstrategien & Genetische Algorithmen Simulation Neuronaler Netze Positionale Logische Algebra Fuzzy-Logik OVER 777 HISTORICAL/TECHNICAL OBJECTS TO EXPLORE … THE ON-LINE MUSEUM RechenMaschinen, RechenStäbe, … , SchreibMaschinen, Telefone, Uhren […]

 Posted by at 6:10 am
May 202019
 
The Babbage engine - CHM

https://www.computerhistory.org/babbage/howitworks/   Welcome Overview History The Engines How it Works Key People A Modern Sequel How it Works e menu © Computer History Museum | Credits

 Posted by at 6:03 am
May 082019
 

http://www.azillionmonkeys.com/qed/sqroot.html √Square Roots © Copyright 1996-2006 by Paul HsiehEverything you ever wanted to know about square roots, but were afraid to ask. Compute one now! Algorithms Implementations By Hand Distance Estimates Mathematics Acknowledgements 1. Compute a square root now! Enter a non-negative number in the Input field below:

 Posted by at 7:16 am
May 072019
 
Microcode: Electronic Building Blocks

http://www.vcalc.net/hp-code.htm   Microcode: Electronic Building Blocks For Calculators Last Update: January 22, 2003 — THE HP REFERENCE Hewlett Packard Personal Calculator Digest Vol. 3, 1977 pp 4-6 Just as DNA can be called the building blocks of the human organism. Microcode can be called the building blocks of the electronic calculator. But, while the way the […]

 Posted by at 7:53 pm
May 042019
 
Mechanical calculator divisions

Division, part 1: Integer division   MATHEMATICAL CRANKS ABOUT USAGE RESTORATION AND INVESTIGATION HISTORY Adventures in mechanical calculation DIVISION, PART 1: INTEGER DIVISION May 11, 2014 · by Jake · in Usage · 1 Comment Been a long time since I said anything here, and I and my Nippon HL-21 are parted for a few weeks, so I’ll talk algorithms for a while. Thus […]

 Posted by at 7:22 pm
May 032019
 
Cardiac in Python

http://www.pythondiary.com/blog/Oct.15,2014/building-cpu-simulator-python.html   Python Diary Blog Reviews Project Templates Bookmarks My Projects RSS About Wednesday, October 15th, 2014 Building a CPU simulator in Python You can find the entire source listing from this article, plus more interesting code on my Python Experiments BitBucket page. Plus, the source code there will evolve and grow. Early this morning in my Planet Python feed, […]

 Posted by at 5:44 am
May 032019
 
CARDIAC stands for "CARDboard Illustrative Aid to Computation."

https://www.cs.drexel.edu/~bls96/museum/cardiac.html   Background The acronym CARDIAC stands for “CARDboard Illustrative Aid to Computation.” It was developed by David Hagelbarger at Bell Labs as a tool for teaching how computers work in a time when access to real computers was extremely limited. The CARDIAC kit consists of a folded cardboard “computer” and an instruction manual. In July […]

 Posted by at 5:43 am
May 032019
 
Accurate ADC readings on the Arduino

https://hackingmajenkoblog.wordpress.com/2016/02/01/making-accurate-adc-readings-on-the-arduino/ HOME SHOP LEARN BLOG NEWS RESOURCES CONTACT LOG IN REGISTER MY CART You are here Home » Blogs » matt’s blog » Making accurate ADC readings on the Arduino Making accurate ADC readings on the Arduino Submitted by matt on Mon, 01/02/2016 – 12:28 There are many sensors out there which output a voltage as a function of the supply voltage […]

 Posted by at 5:41 am
Apr 272019
 
PCB

  EN PRODUKTY POPTÁVKA / OBJEDNÁVKA TECHNICKÉ INFORMACE TECHNOLOGIE NOVÁ BROŽURA KONTAKT Výroba desek plošných spojů Nová brožura pro vývojáře Na 20 stranách formátu A4 najdete celou škálu tabulek, nákresů, fotek nebo popisů důležitých pro kvalitní návrh desek plošných spojů. Přináší důležité informace a odpovědi na vaše dotazy. Navrhnutý stackup, dodržení aspect ratia vrtaného otvoru, […]

 Posted by at 3:13 pm
Apr 222019
 
Floating point format

https://docs.oracle.com/cd/E19957-01/806-3568/ncg_goldberg.html     Numerical Computation Guide   Appendix D What Every Computer Scientist Should Know About Floating-Point Arithmetic Note – This appendix is an edited reprint of the paper What Every Computer Scientist Should Know About Floating-Point Arithmetic, by David Goldberg, published in the March, 1991 issue of Computing Surveys. Copyright 1991, Association for Computing Machinery, Inc., reprinted […]

 Posted by at 7:29 pm
Apr 182019
 
Measure current - TI Energy Trace

https://web.archive.org/web/20180119022941/http://energia.nu/guide/tutorial_energytrace/ https://43oh.com/2015/09/how-to-measure-an-energia-applications-power-usage-with-energytrace   https://github.com/carrotIndustries/energytrace-util How to measure Energy profile in Energia with TI Energy Trace This tutorial is based on material originally posted at 43oh.com by Frank Milburn: http://43oh.com/2015/09/how-to-measure-an-energia-applications-power-usage-with-energytrace/ While experimenting with an nRF24L01 radio and MSP430G2553 microcontroller powered by a super capacitor and solar panel, the need to better understand the energy usage became increasingly apparent. I […]

 Posted by at 6:16 pm
Apr 162019
 

  These Python Tutor users are asking for help right now. Please volunteer to help! user_7b0 from South Korea needs help with Python3 – 3 people chatting – click to help (active a few seconds ago, requested an hour ago) user_69a from Santiago de Cali, Colombia needs help with Python2 – click to help (IDLE: last active 7 minutes […]

 Posted by at 6:51 pm
Apr 152019
 
6502 Assembler

https://www.masswerk.at/6502/assembler.html mass:werk/products/6502 6502 Assembler src: listing: object code: Show the 6502 Instruction Set. Show the virtual 6502 emulator. Show the 6502 Disassembler Instructions

 Posted by at 5:18 am
Apr 062019
 
Nixie on web page

http://cestmir.freeside.sk/projects/dhtml-nixie-display/   Virtual nixie tube (digitron) display – DHTML component library © 2007-08 Čestmír Hýbl <cestmir.hybl@nustep.net> Current date (NixieDisplay example) skin… Current time (NixieClock example) skin… Calculator (NixieCalculator example) skin… (just type expressions on keyboard as on any basic electronic calculator) [q] sqrt   [Q] sqr   [^] pow   [m] +/-   [p] PI […]

 Posted by at 5:10 pm
Apr 022019
 
JeeNode

https://jeelabs.net/projects/hardware/wiki/JeeNode JeeNode v6 – JN Hardware Reference The JeeNode is a wireless micro-controller board designed for a variety of Physical Computing tasks. From measuring and reporting temperature, humidity, and other environmental data to tracking and controlling energy consumption around the house. It was inspired by the Arduino Duemilanove and Uno boards, and by the “Real Bare Bones Board” (RBBB) from Modern […]

 Posted by at 4:44 am
Mar 242019
 
How to Install amForth on the Arduino Uno

    Rod Bhar How to Install amForth on the Arduino Uno Posted on October 9, 2015 by Rod Under:Electronics Tagged with:AmForth,Arduino,Forthduino This is a detailed technical article that describes how to set up an Arduino Uno microcontroller board with a version of the Forth programming language called amForth. My regular readers should ignore this post. Stay tuned though […]

 Posted by at 8:41 pm
Mar 192019
 

file:///C:/ti/430eforth-ide/lessons/lesson12.html ( Example 12. Sines and Cosines ) \ Sines and cosines of angles are among the most often encountered \ transdential functions, useful in drawing circles and many other \ different applications. They are usually computed using floating \ numbers for accuracy and dynamic range. However, for graphics \ applications in digital systems, single […]

 Posted by at 6:43 am
Mar 182019
 
Radio time signals

http://genesisradio.com.au/VK2DX/time_signals.html Receiving, identifying and decoding LF/HF radio time signalsReceiving, identifying and decoding time signals is an interesting and sometimes challenging aspect of amateur radio. Time signals have unique spectral ‘foot print’ which makes them very special! List of active time signal transmitters, received in Australia (except for MSF, TDF and BBC which were received and […]

 Posted by at 6:58 am
Mar 162019
 

https://skilldrick.github.io/easyforth/ Easy Forth   by Nick Morgan View on GitHub Introduction Adding Some Numbers Defining Words Stack Manipulation Generating Output Conditionals and Loops Variables and Constants Arrays Keyboard Input Snake! The End Introduction This small ebook is here to teach you a programming language called Forth. Forth is a language unlike most others. It’s not functional or object […]

 Posted by at 10:07 am
Mar 142019
 
Forth-Gesellschaft e.V.

https://www.forth-ev.de/ Forth-Gesellschaft e.V. Wir programmieren Forth Home  :  Mitmachen  :  Erweiterte Suche  :  Statistik  :  Verzeichnis  :  Datenschutzerklärung  :  Forth Büro  :  Impressum  :  Photos  :  Redaktion  :  Download  :  Links  : Umfragen  :  Kalender  :  Wiki Erweiterte Suche   Anmelden Username: Passwort: Passwort vergessen? Infos Was ist Forth? Die Forth-Gesellschaft Mitglied werden Das Forth Magazin Forth-eV Wiki Mikrocontroller-Verleih Drachenpreis Forth Applikationen Forth im Internet Persönliche Kontakte Kategorien Home Nachrichten (84/0) Mikrokontrollerverleih (4/0) Forth Chat (4/0) Archiv (283/0) Schatztruhe (3/0) Tagungen (19/0) Whois? (6/0) Support (7/0) in site (2/0) LaunchPad & 4e4th (10/0) Termine […]

 Posted by at 7:48 am
Mar 142019
 
4E4th - Forth For Education IDE

http://www.4e4th-ide.org/   4E4th – Forth For Education 4E4th-IDE – the Integrated Development Environment for your MSP430 LaunchPad … The 4E4th-IDE for Windows is a totally Integrated Development Environment for MSP430 LaunchPad Forth for Education –

 Posted by at 7:44 am
Mar 102019
 
W1209 Thermostat Board

https://github.com/TG9541/stm8ef/wiki/Board-W1209 Board W1209 Thomas edited this page on 23 Dec 2018 · 75 revisions W1209 Thermostat Board The W1209 thermostat module has a STM8S controller, a sensor input, keys, LED display, and a relay. It can be reprogrammed for control, timing, or counting. At a price below $1.50 it can be used for “set and forget” applications. Note: […]

 Posted by at 8:09 pm