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Charles Petzold

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Can Guitar Frets Perform Multiplication? I’m sure that some pictures are worth a thousand words, but others trigger a whole lot of...
3rd Sep 2026
1

Can Guitar Frets Perform Multiplication?

from Charles Petzold [alt+shift+b] in programming

3rd Sep 2026
I’m sure that some pictures are worth a thousand words, but others trigger a whole lot of puzzlement. Such was the case with the cover of a book I recently bought entitled Calculating with Tones: The Logarithmic Logic of Music: ... more ...
AI-Supercharged Phishing Emails It was once possible to detect email scams by misspellings, sloppy grammar, messy formatting, and...
22nd Aug 2026
2

AI-Supercharged Phishing Emails

from Charles Petzold [alt+shift+b] in programming

22nd Aug 2026
It was once possible to detect email scams by misspellings, sloppy grammar, messy formatting, and other blunders. Now that scammers are apparently using AI to aid in their phishing emails, the tells are more subtle. ... more ...
Protests Then and Now When a government engages in deviant behavior, it is the responsibility of the people to express...
24th Mar 2026
2

Protests Then and Now

from Charles Petzold [alt+shift+b] in programming

24th Mar 2026
When a government engages in deviant behavior, it is the responsibility of the people to express their opposition. That’s why I’ll be participating in the No Kings protest in New York City on Saturday. ... more ...
The Appalling Stupidity of Spotify’s AI DJ Am I naïve in expecting Artificial Intelligence to be smart? Is my interpretation of the word...
26th Feb 2026
2

The Appalling Stupidity of Spotify’s AI DJ

from Charles Petzold [alt+shift+b] in programming

26th Feb 2026
Am I naïve in expecting Artificial Intelligence to be smart? Is my interpretation of the word “intelligence” too literal? And when an AI behaves stupidly, who’s to blame? The programmers or the AI entity itself? Is it even proper to make a distinction between the two? Or does the...
30 Years After all these years, I still get the dreams. ... more ...
13th Jan 2026
1

30 Years

from Charles Petzold [alt+shift+b] in programming

13th Jan 2026
After all these years, I still get the dreams. ... more ...
Twenty Years of Blog Posts Today is the 20th anniversary of this blog. I posted my first entry 20 years ago as I was finishing...
23rd Aug 2025
1

Twenty Years of Blog Posts

from Charles Petzold [alt+shift+b] in programming

23rd Aug 2025
Today is the 20th anniversary of this blog. I posted my first entry 20 years ago as I was finishing my book Programming Microsoft Windows Forms. Since then, I’ve posted over 900 entries, all of which are still online. ... more ...
The Mary Queen of Scots Channel Anamorphosis: A 3D Simulation I’ve been going down some odd rabbit holes recently while researching my free online...
17th May 2025
1

The Mary Queen of Scots Channel Anamorphosis: A 3D Simulation

from Charles Petzold [alt+shift+b] in programming

17th May 2025
I’ve been going down some odd rabbit holes recently while researching my free online book-in-progress The Lost Art of Logarithms. Although the book is mostly focused on the history, use, meaning, and importance of logarithms, I believe that even histories of science and...
Password Math A friend from my PC Magazine days recently posted on Facebook a little mathematics anomaly that he...
8th Feb 2025
1

Password Math

from Charles Petzold [alt+shift+b] in programming

8th Feb 2025
A friend from my PC Magazine days recently posted on Facebook a little mathematics anomaly that he encountered while trying to figure out the number of possible passwords under certain conditions. He began with the stipulation that a four-character password had to be constructed...
2025 Project: “The Lost Art of Logarithms” I don’t make New Year’s resolutions, but I do have New Year’s projects, and for 2025 I hope to spend...
1st Jan 2025
1

2025 Project: “The Lost Art of Logarithms”

from Charles Petzold [alt+shift+b] in programming

1st Jan 2025
I don’t make New Year’s resolutions, but I do have New Year’s projects, and for 2025 I hope to spend as much time as possible working on my book The Lost Art of Logarithms. ... more ...
The Best Decade in Music Like many people who turned 11 years old in 1964, the first record album I bought “on my own” — in...
14th Dec 2024
1

The Best Decade in Music

from Charles Petzold [alt+shift+b] in programming

14th Dec 2024
Like many people who turned 11 years old in 1964, the first record album I bought “on my own” — in other words by pleading “Mom, can you get this album for me?” — was Meet the Beatles!, their first release in the United States. But so what? I have about as much inclination to...
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