hazeii

21 ms·

181.
by hazeii 7y ago
From the article, about why 80x25 became standard:- >The biggest problem with this theory is the VT100's display was 80×24, not 80×25 Having spent quite a few years banging away on VT100's and clones, wasn't the display ac
182.
by hazeii 7y ago
An interesting - and somewhat intuitive - observation is that the sharper the focus the higher the spatial frequencies go (this is pretty obvious when viewing a composite video signal on an oscilloscope while adjusting the camera focus - th
183.
by hazeii 7y ago
pprune is the goto site whenever anything interesting happens in aviation (and the pro's there are very aware that it's where the journalists will start looking when there's an incident).
184.
by hazeii 7y ago
Recursive gem in PDP-11 assembler: convert binary value in R0 into ASCII:- CNV10: MOV R0,-(SP) ;Converts binary value CLR R0 ;in R0 to ASCII in buffer 1$: INC R0 ;pointed to R1 SUB #10.,@SP
185.
by hazeii 7y ago
Also here's a great article with a couple of examples (think this was discussed here a while back):- https://fastjetperformance.com/podcasts/how-i-almost-destroy...
186.
by hazeii 7y ago
It's called 'the Normalisation of Deviancy' e.g. [0]; there's quite a lot of recent literature about it. Basically a risk is taken and nothing goes wrong; as a result the risk gets repeated more and more often with less
187.
by hazeii 7y ago
It's likely not a serious proposal; possibly more aimed at shifting people's perception of what's reasonable towards a 'more moderate' solution that would previously have been considered unacceptable. Common techniq
188.
by hazeii 7y ago
Good point, happened I had one today that appeared impossible, yet (of course) it was easily understandable once the root cause was found. The Zebra test is a good friend. [0] https://en.wikipedia.org/wiki/Zebra_%28medi
189.
by hazeii 7y ago
Meta-stability [0] is a hardware issue, surely? Race conditions can create some crazy effects (BTDT) but at least they are fixable in software. [0] https://en.wikipedia.org/wiki/Metastability_%28electronics%2...
190.
by hazeii 7y ago
I was reminded of the same thing this summer, dragging an old telescope out to show Saturn to my son (for the first time). He was so excited to see a 'cartoon planet' for real, it gave my indifference to what you can see in a smal
191.
by hazeii 7y ago
It's been good to me (my first home computer was a Z80 with 768 bytes of RAM, my first pro job was to go onsite and sort a blown bulb in a paper tape reader - that should say how grey :) ). Punching in and out isn't so bad (I&#x27
192.
by hazeii 7y ago
> That and music Given the subject matter and I happened to be listening to Avicii at the time, there was a particular resonance.
193.
by hazeii 7y ago
How did we even end up here? As a greybeard, messing with computers has always been fun for me. Yet somehow, slowly the system has morphed it into a way to grind talented people into the ground with impossible deadlines and insane demands -
194.
by hazeii 7y ago
In hotels I leave a note on the table saying where to look if I'm not back (never been needed, but stories like this remind me to keep doing it).
195.
by hazeii 7y ago
In calc: $ calc calc 2.12.4.1 > (-80538738812075974)^3 + 80435758145817515^3 + 12602123297335631^3 42 > Literally pasted off the web page and verified in a couple of seconds.
196.
by hazeii 7y ago
Indeed, I've just had exactly this case with a high speed USB3 camera. Tested it on 2 PC's and a Pi4 both direct and via a USB3.1 hub and it just wouldn't deliver the theoretical frame rate. Finally turned out the 'premi
197.
by hazeii 7y ago
I quite agree, as I've pointed out elsewhere although the bicycle is fastest away it's a short-lived advantage (I'm not discussion racing starts, so it's assumed all vehicles are starting from idle and reacting to e.g. l
198.
by hazeii 7y ago
Did you forget to figure in the crank length? 180lbs at 6" is 90 foot-lbs of torque.
199.
by hazeii 7y ago
Harley: lights change, dump clutch. ZX9: lights change, rev engine, dump clutch. None we're talking about general around-time riding, waiting for the lights to change here. The point is big torque means less delay between seeing the si
200.
by hazeii 7y ago
Yes, but the car has to accelerate around 20 times the mass. Bugatti Veyron is listed as having the highest torque [0] at 1,106lb/ft but then it weighs over 4,000 lbs. Plus there'd a delay for the engine to rev up to peak torque b
201.
by hazeii 7y ago
Fair enough, though I tend to see the 'true' Ninja's as been the original GPz900, ZX9s, ZX10s and H2's. Of course, for touring there's now the H2 SX Ninja(!)
202.
by hazeii 7y ago
I believe I did point out that on Ninja's (I have one) you need to build the revs; you can't just dump the clutch and go like you can on a BMW Boxer or a Harley (which I also have). Hence the Ninja is generally slowest away when t
203.
by hazeii 7y ago
Bikes like Harleys and BMW twins have plenty of torque, where bikes like Kawasaki Ninja's major on power (peak torque at high revs). Hence Harleys and BMW's are first off the line at the lights (no need to build revs) but the Ninj
204.
by hazeii 7y ago
Big-engined high performance sportsbikes really demonstrate this well. Rolling on the throttle in a high gear at a lowish speed results in a ride up the torque curve; the effect is the faster you get the harder the acceleration becomes. It&
205.
by hazeii 7y ago
Possibly this depends on the definition of "wasted". In a life sense, the question is "how could I have spent the time better?". As it happens, I did some Windows 10 support today, for someone using Outlook for their ema
206.
by hazeii 7y ago
There's a pretty thorough discussion on Reddit[0]. [0] https://www.reddit.com/r/askscience/comments/qw30x/can_an_am...
207.
by hazeii 7y ago
PIC10F200 in 8 pin DIP is about 41 pence (~50 cents) in 1-off here in the UK; great for quick hacks (e.g. I just used one as a 60KHz clock generator). The IDE is free, works on Windows/Linux/Mac and there's an online version
208.
by hazeii 7y ago
There have been similar reports about the UK grid for as long as I can remember (multiple decades). The squeaky wheels get the grease. As for the UK today, certainly anywhere along the South Coast was untroubled by this (including the RJ Mi
209.
by hazeii 7y ago
It's a great thought. Just to make it more fun, let's fit the cars with tanks of inflammable liquid and then drive them really fast, like say 60mph, along the same roads in opposite directions at the same time! What could possibly
210.
by hazeii 7y ago
Having chopped up quite a few USB cables to power Pi's from fixed supplies (for professional use), I can totally relate to this. Even thick 'quality' cables commonly have dinky little copper wires inside, wrapped in lots of p

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