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Category: technology

computer hardware, computer technology

Computer hardware, technology: DisplayPort, part 1

Jack Mar 12, 2026 Tagged with DisplayPort, HDMI, MST

Self-tutoring about computer hardware: the tutor mentions DisplayPort. The following is according to my understanding. DisplayPort is a high-end technology for conveying video signals to a monitor. It also carries audio, but seems most known for its apt handling of …

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electronics, technology

Electronics: DVI, part one: what is DVI?

Jack Mar 10, 2026 Tagged with dvi port on back of smart tv, what does dvi mean in electronics?

Self-tutoring about technology one encounters: the tutor mentions DVI. The following is according to my understanding. Yesterday I was looking at the back of a smart TV, wondering why something didn’t work. It turns out it wasn’t the smart TV’s …

Electronics: DVI, part one: what is DVI? Read more →

computer technology, home computer use

Home computer use: flash drives, part 1: capacity

Jack Feb 27, 2026 Tagged with flash drive, floppy disks, how much storage is 64GB?, usb drive

Self-tutoring about data storage: the tutor opens a discussion about flash drive capacity. The following is according to my understanding. I recall floppy disks. As I recall, one could hold around 1MB of data. When I was a kid (meaning …

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computer technology, electronic lifestyle

Electronic lifestyle, technology: hard-wired

Jack Nov 9, 2025 Tagged with ethernet, gateway, internet speed

Self-tutoring about possibilities with computers and the Internet: the tutor mentions a case of hard wiring. The following is according to my understanding. Back in the day – meaning the late nineties in this case – a lot of serious …

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survival technology, yard work

Yard work: knots

Jack Jul 30, 2024 Tagged with bowline, knots, video, Zeppelin bend

Self-tutoring about skills that facilitate yard work: the tutor mentions knots. I recall, as a child, watching my father tie knots in various situations of quick improvisation. He had grown up around farming, and was also a military man. He …

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technology

Technology: how are microwaves generated?

Jack Apr 16, 2024 Tagged with electronics, magnetron, microwave

Tutoring sciences, questions about technology arise. The tutor mentions how microwaves are generated. Within a microwave oven (for instance), how are the microwaves themselves generated? A simple answer is “from a magnetron.” To explain more, here’s what happens: A cathode …

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technology

Technology: what does fail-safe mean?

Jack Jul 28, 2023

Self-tutoring about technology: the tutor mentions the idea of fail-safe. My understanding of fail-safe is that, if a system within a larger piece of equipment fails, the system that has failed defaults to the most benign state possible. Yet, what …

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video editing

Video Editing: OpenShot: Controlling volume of a track

Jack Mar 16, 2023

Self-tutoring about video editing: the tutor mentions volume control on OpenShot. In this case, I’ll just refer you to this one minute video (for real), by EZ Tutorials, about how to manipulate the volume of a track in OpenShot.

technology

Technology: directed energy weapons, part 2

Jack Feb 8, 2023

Self-tutoring about technology: the tutor continues about directed energy weapons. In my post from February 7, I mention directed energy weapons, giving the example of lasers. Lasers for such an application are sometimes referred to as HELs (high energy lasers). …

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technology

Technology: directed energy weapons, part 1

Jack Feb 7, 2023

Self-tutoring about technology: the tutor begins about directed energy weapons. Directed energy weapons, from my understanding, focus an energy beam at a target. Laser weapons are examples. A laser beam is different from natural light because of the way it’s …

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