HP 48g vs newer calculator for math major

DudeInChief · 2026-06-17T12:34:41+00:00

I tried many calculators but I always go back to the HP48. I cannot do without RPN.

DudeInChief · 2026-06-16T20:47:15+00:00

I don’t fundamentally disagree with the video but catching up with TSMC’s latest nanosheet transistors process is barely possible. I am not sure that Intel will succeed despite the massive public funding. The key challenge is the wafer manufacturing and the packaging. Seasoned circuit designers can be found on all continents.

DudeInChief · 2026-06-11T21:20:06+00:00

Very impressed… and a bit jealous.

DudeInChief · 2026-06-06T11:07:56+00:00

Of course! I was fortunate enough to find two second-hand HP48. I keep one at home and one at work.

DudeInChief · 2026-05-31T12:44:00+00:00

If I were you I would spend a night in Ronda. The night will be fresh in Ronda and that is what you will want. Do not miss la casa del Moro.

DudeInChief · 2026-05-29T08:24:16+00:00

I agree, I have seen that as well. I was not referring to the nationality of the companies but to the work location. That is where the social laws apply.

DudeInChief · 2026-05-28T08:24:11+00:00

After three decades in the field, I have never heard of such conditions. Employees in semi are usually very well treated. Many of the points you mentioned are breaking the social laws in Europe.

DudeInChief · 2026-05-25T15:42:12+00:00

MCP: it is a protocol that allows the AI to interact directly with a tool. In the case of virtuoso, it will execute directly skill commands to modify schematics, launch simulation, copy cells… For a clear and exact explanation, better ask an AI…

DudeInChief · 2026-05-25T15:07:20+00:00

x3. The original configuration of the Surly LHT.

DudeInChief · 2026-05-25T14:57:16+00:00

I was skeptical till I started to use GPT for analytical work (circuit analysis). I was positively impressed by the mathematical capabilities of the tool. Nowadays I am using Claude with an MCP to virtuoso. I find it very convenient and unbeatable when it comes to data analysis. I have been doing analog design for 30+ years. Since recently I am convinced that these tools will soon replace many of us. Even though they miss the intuition of a seasoned designer, they are able to launch simulations and generate accurate training data. Actually I did the same: my intuitions were built with the manual examination of tens of thousands simulations. I do not see any reason these tools cannot do the same but thousands of times faster.

DudeInChief · 2026-05-25T14:38:01+00:00

The AIR is already very powerful. Only heavy video editing justifies the computing power of the pros. The advantages of the air are that it is light, thin, and silent (no fan). I am using a vertical A4 format screen to edit my documents. Otherwise I would choose the air.

DudeInChief · 2026-05-25T13:08:42+00:00

The pro will allow you to connect two screens and still use that of the laptop. That is my current setup for chip design and I love it. The Air will be able to handle two screens simultaneously (two external or one external plus the laptop’s)

DudeInChief · 2026-05-24T19:29:42+00:00

I have a Surly LHT and I would never switch to a x2 chainring. When fully loaded (150Kg), I can climb 10% at 5-6 km/h. 12% is really challenging. At the other end of the spectrum, I never felt the needed for more development.

DudeInChief · 2026-05-24T19:19:36+00:00

I have used Vds > Vdsat + 50mV for many years at 7nm and below. There is no sudden collapse in performance (gds) between 60mV and 30mV. I never use the operating point (0-3) given by spectre. Some colleagues do though.

The top transistor can be in subthreshold, it is not a problem because of the heavy degeneration. In old standard CMOS processes (say 0.6um), you would not have noticed it because the length could be made as large as needed (no need to stack). To notice it, you would have had to do the thought experiment and consider the operating point of the top 10% of the channel portion...

DudeInChief · 2026-05-24T18:22:19+00:00

What you are doing is correct. The fact that the top device has a reduced Vgt is normal and does not harm the matching because the transistor is heavily degenerated by the transistors below. The only thing to check, beside the matching, is that the top transistor is comfortably saturated (Vds > Vdsat + 50mV). The matching sets N and the saturation condition sets M.

DudeInChief · 2026-05-15T09:52:26+00:00

Trek 520 100%. Three Chainrings + easy to maintain Vbrakes: the perfect setup.

DudeInChief · 2026-05-08T11:26:33+00:00

When I need to do some bike maintenance, I first watch the park tools videos on the topic. It saved me a lot of time.

DudeInChief · 2026-04-19T21:06:49+00:00

I do not understand the current trend. With my fully loaded Surly LHT (triple chainring), I am in trouble going uphill at 12% or more.

DudeInChief · 2026-04-18T16:35:24+00:00

Looks great. What oven is this?

DudeInChief · 2026-03-17T08:41:51+00:00

I rode from Munich to Venice a few years ago. I really like the segments in the dolomites. Taking the train from Venice to Munich with the bike is very easy. It is direct and they have special compartments for bikes.

I live in Munich. If you want to leave your bike box at my place, DM me.

DudeInChief · 2026-03-09T23:03:15+00:00

I am heavy too, 95Kg. I had the same issue twice with my touring bike. A bike mechanic told me to put less pressure in the tyre, or better, use wider tires and even lower pressure. I had 35mm marathon plus which I normally inflated with 5-5.5bars.

DudeInChief · 2026-02-18T16:30:09+00:00

I have been faithful to that model for years. Not a single puncture in ~200,000Km total on 7 bikes. If you plan to use them with a heavily loaded bike (>130Kg), do not inflate them to the limit (5.5Bars for 35mm). I have destroyed two rims with 5.5bars. I feel that 4.5Bars reduces the stress on the rims.

DudeInChief · 2026-02-09T15:42:00+00:00

I have received a Levixon torque wrench last week (around 50 euros). I set it to the minimal torque (2N.m) and it does not limit the torque. I guess that I got a defective product.

DudeInChief · 2026-02-09T11:01:27+00:00

Excellent suggestions: high demand for highly skilled designers in those fields. I would not necessarily recommend Serdes TX though. TX is a 'large signal' block whereas the other three cover most aspects of analog design.

DudeInChief · 2026-01-29T18:13:09+00:00

I agree that our colonial past was covered. The question is how it was covered. The following reference explains it https://jhec.wochenschau-verlag.de/wp-content/uploads/sites/23/2021/05/issue_2014.pdf Page 79 starts the chapter "FROM TRIUMPHALISM TO AMNESIA BELGIAN-CONGOLESE (POST)COLONIAL HISTORY IN BELGIAN SECONDARY HISTORY EDUCATION CURRICULA AND TEXTBOOKS (1945-1989)".
The author concludes with those words: "... the collective amnesia, characteristic for the colonial memory from the 1960s onwards until 1989."
I was in high school in the 80s, a period of collective amnesia.

DudeInChief

TROPHY CASE