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GeneralRe: robotic arm way of functioning Pin
Calin Negru8-Aug-22 23:19
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GeneralRe: robotic arm way of functioning Pin
Richard MacCutchan9-Aug-22 0:19
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QuestionCD playback Pin
Calin Negru3-May-22 2:44
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AnswerRe: CD playback Pin
CHill603-May-22 2:50
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GeneralRe: CD playback Pin
Calin Negru20-Aug-22 10:34
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AnswerRe: how to activate new USB "Flash drive " in Linux ? Pin
Sobha Royal Crest26-May-22 2:45
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Questionmicrocontrollers, car electronics frame Pin
Calin Negru10-Apr-22 4:43
Calin Negru10-Apr-22 4:43 
AnswerRe: microcontrollers, car electronics frame Pin
trønderen10-Apr-22 14:34
trønderen10-Apr-22 14:34 
I think you can assume that any microcontroller is Turing complete. So in theory, any microcontroller can replace even the most huge supercomputers. And every computer of any intermediate rank.

But then again: In theory, there is no difference between theory and practice, but in practice there may be.

Microcontrollers tend to have a very short paper tape. Clock speeds may be measured in kHz; memory sizes in kilobytes. (Well, there are as well microcontrollers running at quite a few MHz and addressing gigabytes, but some of them could deserve being called millicontrollers ...).

Microcontrollers are plain CPUs, but often packed with a lot of I/O circuitry on the chip, and some RAM / ROM / Flash - maybe all that the CPU needs in typical applications. Frequently, all that is needed is integrated on the chip, and it may be referred to as a SoC - "System on Chip".

For the car: Anything that can be read as a digital signal can be read by a microcontroller. Many microcontrollers also have one or more analog-to-digital (A/D) converters on-chip, so the signal need not even be digital outside the chip (but the handling of the reading is always done after it has been digitized). Anything that can be controlled through a digital signal can be controlled - call it 'changed', if you prefer - by a microcontroller. Likewise, microcontrollers may have on-chip digital-to-analog (D/A) converters, for (car or other) components that require an analog control signal. In a modern car, lots of components are not manipulated directly by the driver. The driver sends a signal to a controller requesting it to take the necessary steps to obtain some desired result, whether to start the engine, operate the ABS breaking system, or flash the blinkers.

This goes for almost all modern electronics: Today you hardly ever turn a potentiometer or press a switch to make a current flow. You still have dials, but they only serve as signal generators for a processor (/microcontroller) that in turn sends the "real" control signal to the component, possibly after some checking, adjustments, or reshaping.

Most likely, the rich set of I/O facilities typically integrated into the microcontroller makes it far better suited to such control tasks (guess what has inspired its name!) than, say, the typical CPUs found in desktop computers. A microcontroller usually runs a fixed set of software functions, and perform a fixed set of tasks - you boot it up with the software it will need, and do not add any more later. Knowing the tasks it will run, you will know how powerful it has to be, and you select a microcontroller accordingly. For battery driven applications you may also select clock frequency accordingly - the lower the frequency, the longer the battery life.
AnswerRe: how to SIMPLY remove inactive RAID ? Pin
Dave Kreskowiak4-Apr-22 4:46
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GeneralRe: how to SIMPLY remove inactive RAID ? Pin
Richard MacCutchan5-Apr-22 6:33
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AnswerRe: how to get grub to load "last selected OS"? Pin
Richard MacCutchan2-Apr-22 21:23
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GeneralRe: how to get grub to load "last selected OS"? Pin
Richard MacCutchan3-Apr-22 3:06
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GeneralRe: how to get grub to load "last selected OS"? Pin
Richard MacCutchan3-Apr-22 21:25
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GeneralRe: how to get grub to load "last selected OS"? Pin
Richard MacCutchan20-Apr-22 6:06
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GeneralRe: how to get grub to load "last selected OS"? Pin
Richard MacCutchan20-Apr-22 8:30
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AnswerRe: hci_get_route and hci_open_dev - few questions Pin
Richard MacCutchan28-Mar-22 21:35
mveRichard MacCutchan28-Mar-22 21:35 
GeneralRe: hci_get_route and hci_open_dev - few questions Pin
wunsch taria24-Apr-23 20:48
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AnswerRe: are Bluetooth "devices " pairing or connecting before "scan" ? Pin
k505423-Mar-22 10:28
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AnswerRe: How to recover from stuck Bluetooth scan ? Pin
Eddy Vluggen20-Mar-22 8:39
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AnswerRe: How to recover from stuck Bluetooth scan ? Pin
k505421-Mar-22 5:02
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GeneralRe: How to recover from stuck Bluetooth scan ? Pin
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AnswerRe: What Is RAID 5 advantage over simple backup? Pin
Eddy Vluggen20-Mar-22 8:37
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AnswerRe: What Is RAID 5 advantage over simple backup? Pin
Dave Kreskowiak20-Mar-22 11:03
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AnswerRe: What Is RAID 5 advantage over simple backup? Pin
k505421-Mar-22 5:56
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AnswerRe: What Is RAID 5 advantage over simple backup? Pin
trønderen21-Mar-22 6:28
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