What is the difference between LED dot matrix screen and ordinary LED display
Author:wa0001 Time:2021-06-11 11:20 Browse(494)
The difference between LED dot matrix screen and LED display screen is that the brightness of LED dot matrix screen is relatively low. The first mock exam of LED is LED, which is a module. It is usually packaged with modules. 8*8 lamps are usually a module. The module in LED display is a minimum display unit, which includes circuit boards, LED, bottom shells, mask and so on. Generally, multiple modules are first assembled into a box (generally, the length and width of the box are not more than 1m), and then the box is installed into the LED display screen required by customers. Because of this, the specific module of LED dot matrix screen limits the driving mode of LED dot matrix screen, which directly affects that its brightness can not reach very high/
The difference between the first mock exam LED and the LED display is that the LED dot matrix screen is relatively low luminance. The LED in the.
LED dot matrix screen (that is, the lamp) is packaged into one module.

What is the difference between LED dot matrix screen and ordinary LED display

, usually 8*8 lamp as a module, and the LED display module is a minimum display unit, which contains circuit boards, LED, and bottom shells. Mask, etc.
generally, multiple modules are first assembled into a box (generally, the length and width of the box are not more than 1m).
then the box is installed into the LED display screen required by customers.
because of this.
the specific module of LED dot matrix screen limits the driving mode of LED dot matrix screen, which directly affects its brightness, and each LED in the LED display screen is controlled separately, There are many choices in the driving mode and circuit design, so the brightness can be designed much higher.
in this paper, the design method is introducedAt present, the LED dot matrix screen is going to be eliminated gradually.
moreover, the price is low and the quality is not very good.
the main reason is that the LED dot matrix module can not meet the requirements in many aspects.
The scrolling screen mentioned by the building owner.
there are led dot matrix screen and LED display screen. Because the main purpose is to display some text and simple pictures, this kind of screen is mostly monochrome and bicolor.
if you need to play video, you need a full-color display screen (also known as three primary colors of red, green and blue).
the price will be much higher.
if you need to play video, you need a full-color display screenIn addition,
once again, LED dot matrix screen is commonly used as information screen to display text and simple pictures.
if the building owner has sufficient funds,
I suggest that the building owner consider LED display screen.
after all, it is more reliable.
.
when multiple LEDs are displayed.
if the building owner has sufficient funds, it is more reliableIn order to simplify the circuit, reduce the cost and save the system resources, all n-bit segment selection codes are connected in parallel and controlled by a 74HC595.
because all the segment selection codes of LEDs are controlled by a 74HC595 parallel output port.
therefore, n-bit LEDs will display the same characters at every moment.
if you want to display different characters for each LED,
scanning method must be used, That is to say, only one display character is used at each instant.
at this instant.
74HC595 parallel output port outputs corresponding character segment selection code, and bit selection controls I / O port to send gating level at the display bit, In order to ensure that the corresponding characters are displayed in this bit.
in this way, the characters should be displayed in each time-sharing display.
because 74HC595 has the latch function.
and it takes a certain time to select the serial input segment code, the visual persistence effect can be formed without delay.
in this way, the system can display the corresponding characters in each time-sharing display    When n-bit LED is displayed.
only one 74HC595 is needed, and the cost is the lowest    Practice has proved that the performance of this multi bit LED display method is stable. If a 74HC595 is cascaded, 32-bit LED display can be realized without increasing I / O port line.
the author has done 48 bit LED display.
it should be stable and reliable.
http://molihong.cn/rjyv/30145.html .
.
Related topics