Why do circuit breakers go up for on and down for off?

Feb 11, 2023 Last reply: 2 years ago 1839 Replies

You are really into poop. A lot of guys are.

By the time the PDP-11 came out, or the PDP-8I for that matter, things were much better.

Look it up.

The PDP 15 was well before that and didnt have that problem at all.

I didn't need to.

I will have to resort to DuckDuckGo to find out what the hell mauve is. Oh, purple, sort of. I went though the '80s without a woman hanging around the house. They know about that sort of stuff. Well, maybe not my ex. She never cared about House Beautiful and afaik she never wore makeup in her life.

In my dotage I've taken to building models of German WWII armor and have been introduced to the Tamiya rack at the hobby store. Ye Gods...

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The Germans built some fine tanks but luckily they didn't let Eva Braun select the color schemes and I can go by the numbers.

One of the available theme for our product really is teal, so called. I coded in #008080 and it wasn't a match. I hunted down the programmer and asked wtf? not very gently. Turns out his boss didn't like the color everybody else calls teal so he screwed around with the values until he got something that was acceptable and called it teal.

There are two other sort of blueish choices that I can barely distinguish.

Another product had strange color combination until I figured out it was the flag of India.

Had to look that up too. Mouse colored doesn't sound like it would go over with the fashionistas. Better than naked mole-rat I guess.

Not an actual term outside of my imagination. TensorFlow is a Google endeavor and they provide a web interface called Colab where you can execute TF in Python.

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Google also builds their own specialized hardware:

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Others use GPUs like NVidias. After you construct a model you train it with a large set of labeled data over many iterations to optimize the weights and it's very processor intensive. As you might guess from tensor you're deep into linear algebra.

After training the model and getting the error down to an acceptable level you can export a .tflite file that's relatively small. The metaphor is when you're learning something new you're very busy but when you get around to applying the knowledge it's nowhere near as intensive so it can be handled by an embedded processor.

The Arduino nano 33 BLE Sense is popular. It uses the Nordic nRF52840 32- bit ARM processor and has an inertial unit, magnetic sensor, temperature, humidity, and other sensors in a very small package.

At least that's the theory. In the '80s I was programming MCUs lke the

8048 family for devices like handheld pH/ion concentration meters. I took a course in neural networks which was going to be the Next Great Thing. It was oversold since the hardware didn't exist to make it feasible. 40 years later neural networks were reborn as machine learning except now you have racks and racks of TPUs churning away to make it work. Whether it can be used to do useful work on MCUs is another question.

For a sense of scale Facebook (Meta) managed to leak their large language model. It's only 288 GB. Nadella recently said Siri, Alexa, Cortana and so forth are as dumb as rocks. We'll see what the next generation of AI buzz brings.

The joys of pioneering... In the early CMOS days a lot of people slept through the part of 'these have low power consumption -- until you start driving the piss out of them'.

You're the one who sees it where it aint.

I'm pretty much indifferent to House Beautiful and never wore makeup. But my capacity for trivia is nearly boundless.

That said, my husband and I like to watch various home improvement shows where decorating is also involved. We criticize bad construction technique and marvel at the decorators' ability to listen to the homeowners and do nothing like what they wanted. It's always white walls, kitchen cabinets, and countertops. I think their purpose is to scrape any personality away from the house.

If an interior decorator ever knocks on my door, they'll be shot on sight.

In a stage play I was involved with, someone asked the difference between an interior decorator and an interior designer. "The size of the bill."

People are very different. You can only generalize about averages but the normal distribution of most anything is wide.

That's great. There's something for everybody.

Exteriors are as bad. No architect now is willing to use decoration or colors any more. All the new stuff is ugly flat boxes painted grey, or crude bare concrete.

The old Victorians and deco and moderne houses are quirky and wonderful.

OK, machine learning. In a hard embedded electronic instrument, we want predictability and zero errors. ML and NNs and that sort of thing seems to me to continually generate dangerous bugs.

Golly. I knew mauve as a five year old, red blue and white paint.

Long time before I worked out what Chartreuse was, though.

Dont agree, nothing wonderful about them imo.

We don't see much concrete here. Mostly wood or vinyl made to look like wood. The odd bit of cultured stone.

I despise Victorian design. Arts and Crafts was a welcome relief.

Around here (N. California) most homes are stucco with some using painted T-111 plywood siding. Class A office space is mostly glass curtain walls. Industrial is mostly tilt-up.

There is plenty of architectural innovation in the world, regardless of King Charles opinions.

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There are older victorians in most towns as well, dating to the late

1800s; they're generally energy pigs and expensive to care for.

Hideous grey boxes win awards.

The Vics here are mostly on 24 foot lots with no space between, so the long sides don't lose heat.

It concerns me that it isn't too clear how it works once past the conceptual level. The linear algebra, gradient descent, and other algorithms are straightforward, but after you feed in a few hundred thousand labeled data values it's hard to tell what you have. I read an article a couple of days ago that some researchers are trying to apply Fourier analysis to the models to get a better understanding.

My ex and I had some fun times in the little room at the top of a tower in an old Victorian. The entry was sort of a trap door so we wouldn't be disturbed. The curved glass panes blew my mind.

I knew a man who specialized in Victorian restoration. He made a living but it was mostly a labor of love. Had he accounted for all the hours he put in and paid a reasonable hourly rate you'd have to be Bill Gates to afford him.

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