Small white to consult, I use the 51 single-chip microcomputer and interface are used when I using digital tube p2.2 p2.3 p2.4 the three interfaces, when use of the LED module p2.2 p2.3 p2.4 interface of LED light is on, is there a way to make him not bright, even oneself also can control again destroy the light of the three lights, chip is STC89C52

CodePudding user response:

Use a different port control LED

CodePudding user response:

reference 1/f, the wise know already should good karma response:

use a different port control LED to

Thank you bosses, but he every port on principle diagram is fixed, how can I go with other port control, dynamic digital tube 138 decoder of the three P22 P23 P24 port will follow to change, I'm sorry, these problems in your opinion should be insignificant, but it bothers me nearly a week, and I don't know how to search, please instruct me, or guide a way to answer, thank you very much, happy New Year

CodePudding user response:

If it is a product, so, as far as I know, some of them are equipped with jump cap nipple, remove the cap or change to jump directly cap can be in the use of different modules, if you want to reuse port to modify circuit, such as in the original cap add triode control and so on, to achieve the purpose of you want, it all depends on the specific circuit board,

CodePudding user response:

reference 3 floor wise men know already should good karma response:

if it is finished, so, as far as I know, some of which are equipped with a short hop cap, remove the cap or change to jump directly cap can be in the use of different modules, if you want to reuse the port to modify circuit, such as in the original cap add triode control and so on, to achieve the purpose of you want, it all depends on the specific circuit boards,

Thank you, I this is a finished product board, I think I see what you mean, before also has 8 * 8 LED lattice conflict, are without control yourself, then take the jump risk, but this a few LED lamp is not cap, so according to this line of thought, unless modified circuit, or should be cannot adjust, thank you for your bosses

CodePudding user response:

Hardware limitations, cannot be changed