The displays themselves are pretty basic, they (in most cases) just have a microcontroller with some firmware that allows them to convert commands they get serially into patterns and/or characters. The more recent ones also give feedback regarding broken LEDs for example. Typically these firmwares are written either in assembly or C.
The real intelligence of these systems is often located in a central control system that coordinates an entire city or even a state. These control systems can perform intelligent tasks on entire groups of signs like given the location of an accident, they add the correct distance to the accident to the warning message, automatically divert traffic, and so on.
I know of such systems written in C, C++, Java, G2, ... Depends on the moment they were designed. So no, they're not by definition outdated and antique! They do tend to have a longer lifespan than your average desktop app though which often leads to the oldest parts being swapped out for more recent developments and these newer modules will in many cases be based on more recent technologies.
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显示器本身非常基本，它们（在大多数情况下）只有一个带有一些固件的微控制器，允许它们将串行获得的命令转换为模式和/或字符。例如，最近的版本还提供了有关 LED 损坏的反馈。通常这些固件是用汇编语言或 C 语言编写的。
这些系统的真正智能通常位于协调整个城市甚至一个州的中央控制系统中。这些控制系统可以对整组标志执行智能任务，例如给定事故位置、将距事故的正确距离添加到警告消息中、自动疏导交通等。
我知道这样的系统是用 C、C++、Java、G2 编写的……取决于它们设计的时刻。所以不，从定义上来说，它们并不是过时的和古董的！它们确实比普通桌面应用程序具有更长的生命周期，但这通常会导致最旧的部分被替换为更新的开发内容，并且这些较新的模块在许多情况下将基于更新的技术。
The displays themselves are pretty basic, they (in most cases) just have a microcontroller with some firmware that allows them to convert commands they get serially into patterns and/or characters. The more recent ones also give feedback regarding broken LEDs for example. Typically these firmwares are written either in assembly or C.
The real intelligence of these systems is often located in a central control system that coordinates an entire city or even a state. These control systems can perform intelligent tasks on entire groups of signs like given the location of an accident, they add the correct distance to the accident to the warning message, automatically divert traffic, and so on.
I know of such systems written in C, C++, Java, G2, ... Depends on the moment they were designed. So no, they're not by definition outdated and antique! They do tend to have a longer lifespan than your average desktop app though which often leads to the oldest parts being swapped out for more recent developments and these newer modules will in many cases be based on more recent technologies.