The correct answer is A, B, C and E.
Solution analysis:
To answer this question, we first need to clarify the basic components of LED display screens. LED display screens, as a large display device, are usually composed of multiple key components to achieve high brightness and high definition display effects. Now, let's analyze each option one by one:
A. LED module: The LED module is the core part of the LED display screen. It is composed of multiple LED lamp beads arranged and packaged according to certain rules. These modules are the basic units that constitute the entire display screen, responsible for emitting light and forming images or text. Therefore, LED modules are one of the basic components of LED display screens.
B. Control card: The control card is the control center of the LED display screen. It is responsible for receiving video, image or text information from external devices and converting it into signals that the LED display screen can recognize. The control card plays a key role in decoding, converting and transmitting signals, so it is also an indispensable part of the LED display screen.
C. Power supply: The power supply provides the required electrical energy for the LED display screen. Since the power consumption of LED display screens is relatively large, especially when used in large areas, a stable and reliable power supply is required to ensure its normal operation. Therefore, the power supply is an important part of the LED display screen.
D. Driver: Although the driver plays an important role in the application of LED technology, in the basic composition of LED display screens, the driver is usually integrated into the LED module or control card and is not listed as a separate, clearly distinguishable component. The main function of the driver is to convert the signal output by the control card into a current or voltage signal that the LED lamp beads can accept to drive the LED lamp beads to emit light. However, in the context of this question, we prefer to regard it as a part of the LED module or control card.
E. Auxiliary equipment (display frame, temperature control system, protector, signal converter, etc.): These auxiliary equipment are essential to the integrity, stability and service life of the LED display screen. The display frame provides support and protection for the LED module; the temperature control system ensures that the display screen operates within the appropriate temperature range to prevent overheating; the protector can protect the display screen from external physical shock and damage; the signal converter is used to process signals from different sources and formats to ensure that they can be correctly received and displayed by the display screen. These auxiliary equipment together constitute the external support system and guarantee system of the LED display screen.
In summary, the basic components of LED display screens include LED modules (A), control cards (B), power supplies (C), and auxiliary equipment (E, such as display screen frames, temperature control systems, protectors, signal converters, etc.). Although the driver (D) is important, it is usually not considered an independent and clearly distinguishable component in the context of this question.
Therefore, the correct answer is A, B, C, and E.