your second statement is slightly disorienting. You`re talking about digital "feedback" which is similar, on a superficial level, with force feedback. If my understanding is correct planes do have force feedback on the control column.
On initial power -up I get black screen with centered hardware vendor logo and several lines of text - in lower right corner - giving info about how to access system setup using function keys.
what application posts these lines of text ?
The above "lines of text" go away after a time
Where is this timeout set ?
On multi OS system SINGLE message about "mdxx" timeout is causing total system crash...
This particular mdxx device is unused , non working leftover from RAID 5...
There is NO question for this item.... any guesses are irrelevant, do not bother.
The grub menu OS option is labeled "21,10" - it does not boot...
The "advanced" option - under same main menu boots with message
"welcome to 22.04".
The "advanced " options are labeled as "generic...xxxx " , not as versions as the
main option is.
The question is
what application builds the "grub" menu , where is the file which build this
and why version and generic differ?
I would like to connect with somebody who
uses Linux / Ubuntu in multi operating system confirmation .
Multi OS scattered on multi hardware devices...
A real user, no RTFM, u-tube, post this somewhere else etc.
I have been trying to figure out how such system boots –
specially what are the parts of the boot process.
I know there is a hardware system setup – UEFI
It has setting for “boot process”….
I know under normal conditions I get a “menu screen”
– presumably build by “grub” (residing where ?)
I know and have observed “update “ to “update grub”…
When I change “grub” defaults I am nagged by coders to
“update grub manually “
That is all nice but I like to be sure .
This is for learning purposes , not to fix or elaborate on questions.
There are no questions / problems to fix in this post.
Please no " I know nothing about Ubuntu , my Windoze XYZ works great... "
But what you are giving him is an "RTFM" - which is what he was explicitly not asking for!
He was asking for "A real user". A person that could act as his personal advisor, guru, servant, code generator or whatever - one that can fix his problems right away without bothering him with lots of stuff that only remotely or indirectly relates to what he is struggling with. You gave him a text, not a person.
So he is right if he claims that your answer is exactly what he stated that he did not want.
I suspect "real users" read the manual at some point. I don't see any evidence that the OP did any reading. What does that say.
"Before entering on an understanding, I have meditated for a long time, and have foreseen what might happen. It is not genius which reveals to me suddenly, secretly, what I have to say or to do in a circumstance unexpected by other people; it is reflection, it is meditation." - Napoleon I
I want to design a mini radio, as it is one of my homework..
But as I don't quite clearly know about the resonators, I want to ask for your help.
I have checked online and found some ceramic resonators, and chose this one: CSBLA400KECE-B0 .(Click the datasheet for your reference: CSBLA400KECE-B0.pdf ) Now can anyone ansewer me the following questions:
1.What are the advantages and disadvantages of this type if I use it in my radio?
2.Some one will use quartz crystal resonators when designing communication equipment, is it OK for me to use ceramic resonator rather than the crystal one?
3.Do you have any other choice of the resonator?
Any suggestion will be appreciated!Thank you very much !
"Resonators" is pretty generic term. In general - you are implying a demodulation part of the receiver where "resonators" are used for getting the final; humanely "readable" audio.
In such application crystal or ceramic resonators are OK to use.
I far as technology - the crystal resonators are sort of "things of the past" mainly due to the cost.
Do you have a schematic of your receiver ? I'll be interested to take a look.
Does anyone know a place on the Internet with actual processor zoomed in pictures showing the layout of various transistor areas on the chip. The Internet is full of diagrams, what I`m looking for is a visual representation of the components the diagrams are speaking of.
No. There may be some images for older stuff (like the '80's and '90's), but todays processors transistor are so small and occupy so many layers of the chip that it's not possible to see detail like that anymore.
At my former workplace, some of the pictures on the wall were microphotographs of the company's former chip generations, based on the 8051 architecture developed in 1980. You could easily identify rectangular areas with a regular, quite fine-grained structure: the memory banks. Other areas were more irregular; those were the CPU. Some areas with almost no identifiable structure, more like 'spotty'; that was the various I/O devices (this was an embedded type chip, with lots of I/O beyond the CPU capabilities); you could even identify a couple coils - the chip I/O included a radio.
So you could identify various areas, but it just looked like different kinds of structures, more or less regular or irregular. Seeing the shape of individual components was not possible, at least not on these wall posters.
I am talking about 40+ years old 8-bit technology (or rather: architecture), approx. 50,000 transistors for the CPU. Even with that simple chips, you wouldn't get what you are asking for. Today's 64 bit processors are extremely more dense, and complex, approaching 50 billon transistors. You will probably see "gray" areas that are likely to be the cache memory. If pointed out to you, you can probably distinguish a few other functional areas from the rest, but all you can see is that they are different from, and less regular than, the cache areas.
For the simple question of "what does a so-and-so type transistor really look like?", you can probably find 3D engineering drawings, similar to that of a MOSFET in the Wikipedia article "Transistor". But those are drawings, not the chip photographs you are asking for.
Do robotic arms in a car plant operate mostly based on information provided by sensors? Like they aren`t thought to operate blindly, there is a process of camera/sensor based aiming/homing (if we talk about say a welding arm) on the region where work needs to be done.
It's the entire range between no sensing at all to switches to detect objects to vision systems to detect objects and positions of them, and everything in-between. There is no one sensing system to rule them all.
One of the reasons why I`m asking is I remember seeing car plant footages from the 80`s displaying robotic arms working unassisted (by man) on car frames. Back in those days the sensor technologies were pretty much inexistent so lot`s of questions raising with regards to that kind of footage.
From what you`re saying I get that initially it was 'touching' based.
Those robots were programmed to repeat a fixed set of actions with very little sensor intervention. Move forward x inches, move left y inches, spot weld for z milliseconds, move back, and wait for the next car to arrive.
How does the music data get stored on a CD? What I mean is you can switch between music CD tracks with the next or previous track buttons. How does the reading head know where to jump on the spiral location where the next track begins? Is there a track directory listing containing the track start position for every track on the CD?