1. What is the primary function of an LED display?
a) To display text
b) To display images
c) To provide lighting
d) To control temperature
2. What type of material is commonly used to make the LED in an LED display?
a) Silicon
b) Glass
c) Gallium Arsenide
d) Copper
3. Which type of LED display is typically used for outdoor advertising?
a) OLED
b) LCD
c) LED
d) CRT
4. Which type of LED display is typically used for indoor digital signage?
a) OLED
b) LCD
c) LED
d) CRT
5. How is the brightness of an LED display controlled?
a) By adjusting the voltage
b) By adjusting the current
c) By adjusting the temperature
d) By adjusting the size of the LED
6. What is the advantage of using an LED display over a traditional LCD display?
a) Lower power consumption
b) Higher resolution
c) Faster refresh rate
d) All of the above
7. What is the difference between a full-color LED display and a single-color LED display?
a) Full-color LED displays can display more colors
b) Full-color LED displays have a higher resolution
c) Full-color LED displays have a faster refresh rate
d) All of the above
8. What is the typical lifespan of an LED display?
a) 1000 hours
b) 10,000 hours
c) 100,000 hours
d) 1,000,000 hours
9. What is the difference between a direct-view LED display and a rear-projection LED display?
a) Direct-view LED displays are viewed from the front, while rear-projection LED displays are viewed from the back
b) Direct-view LED displays have a higher resolution, while rear-projection LED displays have a wider viewing angle
c) Direct-view LED displays are brighter, while rear-projection LED displays are more energy efficient
d) All of the above
10. What is the primary advantage of using an LED display for outdoor advertising?
a) High visibility in daylight
b) Low power consumption
c) Long lifespan
d) All of the above
Answers:
- a) To display text
- c) Gallium Arsenide
- c) LED
- c) LED
- b) By adjusting the current
- d) All of the above
- d) All of the above
- c) 100,000 hours
- d) All of the above
- d) All of the above]