Sujet : Re: "RESET"
De : robin_listas (at) *nospam* es.invalid (Carlos E. R.)
Groupes : sci.electronics.designDate : 25. May 2025, 01:37:09
Autres entêtes
Message-ID : <m9f71lF5gr0U1@mid.individual.net>
References : 1
User-Agent : Mozilla Thunderbird
On 2025-05-25 00:34, Don Y wrote:
I don't quite understand the need for "reset" buttons on products.
That function is always available by cycling power -- even for devices
where that is difficult for the user (e.g., PoE, BBU, etc.)
Shouldn't a device be able to get itself out of a "pickle" without
requiring the user to intervene? Particularly devices that are
intended to "run forever"?
I.e., it seems like the presence of a reset button is a tacit admission
that the engineering is "lacking"...
Even the initial microprocessors have a reset pin. When they are powered up, the status of the electronics is unknown, so a small time after power up, the line is triggered by a timer (555 or whatever).
Then, there are many designs where you can not pull power, because there is an unreachable battery.
Then, it is impossible to guarantee that the device will never find itself in a pickle. No matter how fantastic the designers are.
-- Cheers, Carlos E.R.
"RESET"
Re: "RESET"
