The Wiert Corner – irregular stream of stuff

Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘History’ Category

How Douglas Engelbart Invented the Future | Innovation | Smithsonian

Posted by jpluimers on 2020/01/15

Two decades before the personal computer, a shy engineer unveiled the tools that would drive the tech revolution

Don’t read this as a historic piece, but as the potential we are still going to experience what was not just sketched by a true visionary in 1968, but also demonstrated back then: [Archive.isHow Douglas Engelbart Invented the Future | Innovation | Smithsonian.

I am including one of the pictures below by Christie Hemm Klok that shows how far Engelbart was ahead of his time: not his initial invention of an input device (the mouse) “chord” kind.

After that, read about his 1968 presentation: The Mother of All Demos – Wikipedia

Finally, watch the video below, well worth watching the more than one and a half hours.



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Posted in Development, Future, Hardware, History, Network-and-equipment, Power User, Software Development | Leave a Comment »

Reminder to check out the Pascal source code for Apple’s legendary Lisa operating system

Posted by jpluimers on 2020/01/06

This is a reminder to check when the source code was actually released:


Posted in 6502, Apple, Classic Macintosh, History, Power User | Leave a Comment »

The Throttle homepage. Slow that machine down!

Posted by jpluimers on 2020/01/06

Cool tool if you have industrial machinery that uses DOS and needs a slowdown on modern hardware (because for instance your serial communications program is running way too fast): [WayBackThe Throttle homepage. Slow that machine down!

Via Matthijs ter Woord


  • Q) How does throttle work?
  • A) Throttle enables power management bits in the chipset to control CPU clock. Any chipset that conforms to the ACPI (advanced configuration and power interface) specification has a means to enable and control the throttle.
    The intended purpose of these bits is to provide a means of power savings, typically utilized in notebooks or other battery powered devices.
    When the CPU is in a throttled state, it uses less power. It just so happens that a throttled CPU creates a perfect environment to emulate the performance of an older generation CPU!
  • Q) I have a chipset that supports ACPI. Why isn’t it supported in throttle?
  • A) Probably because I don’t know about it. Because the ACPI specification can be implemented in different ways by different chipset manufacturers, it’s impossible to create one generic program that works with all ACPI compliant hardware. This creates the problem of constantly updating the internal database of known hardware. So far, the biggest problem has been finding the documentation for known ACPI compliant chipsets. Adding support for them is the easy part! You may also be using an older version of throttle. Contact me for the latest.
  • Q) Can I have more speed options than just the 8 (or 16) provided?
  • A) No. Throttle provides you with as many different CPU throttling options as the chipset allows. The ACPI spec only defines 8 different modes, each one 12.5% more throttled than the previous. VIA technologies has taken the spec 1 step further and allowed for throttling on 6.25% increments, thus doubling the amount of options available, which provides for more slowdown and a finer tunability.
    If you want to run oldskool games, get a VIA motherboard!There’s nothing I can do to change the available options, and no further options will be available unless the ACPI spec changes.


Posted in History, MS-DOS, Power User | Leave a Comment »

Im memoriam: Rudy Velthuis

Posted by jpluimers on 2020/01/05

Given that I’m fighting rectal cancer and am extremely low on energy, I am keeping this much shorter than I want to.

Recently, I learned that Rudy Velthuis passed away on 2019-05-13. Born on 1960-10-30, he passed away at only age 58.

After asking permission from his family, I wrote a small im memoriam.

We frequently encountered each other on-line in the Delphi community, especially in the early days when I was way more active on forums, newsgroups and chat channels. He was famous there, with good reason.

Though colloquially known as [WayBack“dentist with a strong interest in programming”, he was a great Delphi programmer and very well known for thoroughly documenting the many gaps that Embarcadero left in their documentation.

In 2009, Edwin van der Kraan and I had an opportunity to have dinner with Rudy. We met at his house, where we learned he not only ran a fully fledged dentistry practice, but also was married someone who origilally was from the Philippines. A truly happy couple they were.

In retrospect, I wish we had had met in real life more often, but I’m learning the hard way that life is finite giving you only so much time to do things.

I will remember Rudy because of his knowledge, wit and odd – but great – combination of work and interests.

In the mean time, I have asked a few archival organisations (including the WayBack machine) to archive his sites:

Some of his profiles that I archived on 20190103:

I love the “Kraftwerk – Autobahn” picture on his Stack Overflow profile page, so I included that song below the fold.



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Posted in About, Delphi, Development, History, Personal, Software Development | 4 Comments »

Top 2000 café 2019 – Alle informatie op een rij – NPO Radio 2 – Presentatoren, producers/sidekicks, nieuwslezers en tijden

Posted by jpluimers on 2019/12/23

Een overzicht van alles wat ik via de Top2000 site en Twitter bij elkaar geschraapt heb.

Edit 20190228

  • (Dank René Gerritsen): Stefan Stasse ziek, Annemieke Schollaardt zijn zijn slot, en Emmely de Wilt in het slot van Annemieke, Timur in het slot van Stefan op 26 december.
  • (Dank Matijn Nijhuis): Matijn’s Quiz op 27 en 29 december in de Top 2000 Tent
  • (Dank Moon/Caroline: Caroline Brouwer is toch terug van vakantie)

Edit 20190229; wachttijden: [WayBack] Top 2000 Cafe | Beeld en Geluid 


Start Eind DJ Sidekick/Producer Sidekick Twitter Twitter Twitter Nieuwslezer Twitter
8:00 9:00 Jan-Willem Roodbeen Jeroen Kijk in de Vegte @JWRoodbeen @jeroenkidv Carmen Verheul @carmenverheul
9:00 10:00
10:00 11:00 Bart Arens @BartRadio2
11:00 12:00
12:00 13:00 Gijs Staverman @GijsStaverman
13:00 14:00 Matijn Nijhuis @matijn
14:00 15:00 Rob Stenders Caroline Brouwer @robstenders @radiocarol
(toch niet op vakantie)
15:00 16:00
16:00 17:00 Ruud de Wild Cielke Sijben

Georgina Gulsen

Thijs Maalderink

Gijs Hakkert

@ruuddewild @CielkeSijben
is vervangen door 

17:00 18:00
18:00 19:00 Wouter van der Goes @woutervdgoes
19:00 20:00
20:00 21:00 Annemieke Schollaardt
(vervangt Stefan Stasse)
Nathan Tamis @Annemiekeishere @NathanTamis Wouter Walgemoed @wouwal
21:00 22:00
22:00 23:00 Paul Rabbering @paul_rabbering
23:00 24:00
0:00 1:00 Leo Blokhuis @LeoBlokhuis Nachtlezer
1:00 2:00
2:00 3:00 Rick van Velthuysen @rickvanv
3:00 4:00
4:00 5:00 Frank van ’t Hof @frankvanthof
5:00 6:00
6:00 7:00 Emmely de Wilt @EmmelydeWilt
7:00 8:00 Carmen Verheul @carmenverheul


Matijn’s quiz in de top 2000 tent:

  • 27 december 09.15 – 10.00 uur (Vrijdag)
  • 29 december 09.15 – 10.00 uur (Zondag)



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Posted in History, LifeHacker, Personal, Power User | Leave a Comment »

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