There are two widely used mains power frequencies for alternating current: 50 Hz and 60 Hz. Unless specified by the manufacturer to operate on both 50 and 60Â Hz, appliances may not operate efficiently or even safely if used on anything other than the intended frequency. But there are also other frequencies used for power. But →
40 years since Sinclair QL was released. And what a weird machine it was. I did not own one, but a friend had one. How Sinclair’s QL computer outshined Apple’s Macintosh against all odds https://www.theregister.com/2024/01/16/ql_legacy_at_40/?fbclid=IwAR25KCqGpu82VR-PVy_z_TMatwxHLKu58XMT0fw7VnQ8Zgqas_IaBqOkXMA Compatible hardware and peripherals are still on sale, four decades after its launch. Two weeks before Apple launched the Macintosh, →
Here is an overview of Spectre and Meltdown vulnerabilities that got a lot of publicity in January 2018. Meltdown and Spectre the two original transient execution CPU vulnerabilities. The Meltdown and Spectre vulnerabilities were considered “catastrophic” by security analysts. The vulnerabilities are so severe that security researchers initially believed the reports to be false. In →
Who remembers Phone booths and above all phone cards? Phone cards were a technological advance in the world of public telephone traffic in the 1990s. They allowed to make calls on many phone booths in Finland and phone cards were also a popular collector’s item, collected both used and unused: Telecom companies have placed advertising →
Transistor–transistor logic (TTL) is 60 years old this year based on the following article (Wikipedia claims this happened already in 2023). TTL became the foundation of computers and other digital electronics. TTL integrated circuits (ICs) were widely used in applications such as computers, industrial controls, test equipment and instrumentation, consumer electronics, and synthesizers. The 7400 →
Ghost touches on a touchscreen occur on smart phones and tablets when the screen registers touches or taps without any actual input from the user. This issue can be frustrating, but there are several potential reasons and solutions for it: Screen Calibration: Check if your device has a screen calibration option in the settings. Calibrate →
It might not be the year of the Linux desktop yet, but Linux distributions will soon have their own Blue Screen of Death message. Windows’ infamous “Blue Screen of Death” (BSOD) is a bit of a punchline. People have made a hobby of spotting them out in the wild, and in some circles, they remain →
Here is collection of technology trends news for year 2024. This is a collection of links to articles followed by a short quote. →
This posting is here to collect cyber security news in January 2024. I post links to security vulnerability news to comments of this article. You are also free to post related links to comments. →
Earlier when you wanted to try a programming language, you needed to install compiler and IDE software to your computer. Now there are many on-line tools that allow you to test programming with many programming languages. Many languages on one service: https://onecompiler.com/ https://tio.run/# https://www.codechef.com/ide https://ideone.com/ https://www.codingninjas.com/studio/online-compiler JavaScript https://jsfiddle.net/ C and C++ https://www.programiz.com/c-programming/online-compiler/ https://godbolt.org/ https://cppinsights.io/ Python →