1. Physical key school: the ancestral craft of veteran drivers

Alas, are you lying on the back of the display screen and touching it, but you can't find the change button? I've seen too much about this! actually​ ​The physical character changer of traditional LED screens is usually hidden in three places​​：

1. ​​Maintenance port in the lower right corner​ ​: 80% of outdoor advertising screens are plugged with control panels here
2. ​​Box splicing seams​ ​: The emergency debugging port of the rental screen is often disguised as a structural buckle
3. ​​Power cabinet dark compartment​ ​: The control end of the large screen of the stadium is often used as a neighbor with the distribution box

Last month, a hot pot restaurant owner was so anxious that he misunderstood that the promotion message was written as "68% off" as "86% off". After searching for a long time, he found that the change-word keyboard was hidden in the mezzanine of the light box. So,​ ​You must first look at the product manual when looking for physical buttons​ ​Especially the waterproof design of the outdoor screen will hide the interface so that even the mother cannot recognize it!

2. Software control party: mobile phones can handle so easy

Who is looking for buttons on the screen now? The new LED screen has been smartly controlled:

• ​​Computer software control​ ​: You can change content by connecting to the network cable, and support batch modification of fonts/animations
• ​​Remote control of mobile APP​ ​: Scan the code to bind the equipment, and squat in the toilet to change the advertising vocabulary
• ​​U disk direct plug-in update​ ​: Bring the finished content to the interface and complete the replacement in 5 seconds

Last year, a supermarket held its anniversary celebration, and the 20-yuan advertising screens were to be changed to promotional information at the same time. What do you think? The manager was drinking coffee in the office and using a broken laptop in half an hour. ​ ​The key point is here​ ​: Remember to ask the manufacturer to install genuine control software. The repair fee for the pirated program crashes the system is enough to buy half a new screen!

3. Cloud experts: black technology that changes words while lying down

If you want to say the most convenient thing, you have to count the cloud system. The three unique skills make people call you an expert:

1. ​​Cross-regional management​ ​: The content of the Guangzhou screen in Beijing was delayed by less than 1 second
2. ​​Template library call​ ​: Choose any 300+ font templates, and you can also customize special effects
3. ​​Permission rating​ ​: The boss changes the total price, the store manager adjusts the discount, and the clerk can only change the promotional language

A chain pharmacy owner complained to me that in the past, each branch had to send someone to run errands when changing prices, but now he uses the cloud system to save 3,800 yuan in travel expenses per month. But I have to remind you:​ ​Choose a cloud platform with dual encryption​ ​, don’t let hackers change "buy one get one free" to "clear up and run away"!

4. A guide to avoid pits: a must-read lesson for beginners

If you don't want to take detours, these are the ones that you can suck your lungs:

• ​​Never operate with electricity​ ​: I have seen a hard-pull data cable to burn the motherboard, and the maintenance fee is enough to buy an electric car
• ​​Format conversion is a science​ ​: Import PPT directly into the LED screen? Mosaic quality changes in minutes
• ​​Be careful with font copyright​ ​: The case of commercial Microsoft Yabiao defendants occurred 27 cases last year

Last week, a gym owner was caught - he bought a second-hand control card with cheap pictures, but the font library was missing more than a dozen commonly used characters. In the end, I still have to spend money to upgrade the hardware, and I spent more than 8,000 more inside and outside!

​​Personal opinion​​
To be honest, changing the word words on the LED screen now is like playing with a smartphone - the newer the model, the easier it is to operate. But we also have to be careful. Physical buttons are like the handbrake of a car, which can save lives at critical moments. If you are not sure which method to use, remember this mantra: "Look for interfaces on old screens, play with new screens in the cloud, and the safest to use mixed use! "

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