J836 Recap: 5.2.2 Hardware

What is the primary advantage of using an OLED display over an LCD display?

• Lower power consumption

• Better colour accuracy

• Higher refresh rate

• Longer lifespan

Answer explanation

The primary advantage of OLED displays is their better colour accuracy, as they can produce deeper blacks and a wider color gamut compared to LCDs, which often struggle with color reproduction.

Which type of display screen is most commonly used in smartphones for its touch capabilities?

• LED

• LCD

• OLED

• Touch screen

Answer explanation

The correct answer is 'Touch screen' because smartphones primarily use touch screen technology, which allows users to interact directly with the display, making it the most common type of screen for this purpose.

What is the main function of a backlight in a display screen?

• To increase the screen size

• To enhance the screen's colour depth

• To illuminate the display for better visibility

• To reduce power consumption

Answer explanation

The main function of a backlight in a display screen is to illuminate the display for better visibility, allowing users to see the content clearly, especially in low-light conditions.

Which of the following display types is known for having the thinnest panels?

• LCD

• LED

• OLED

• Touch screen

Answer explanation

OLED displays are known for their ultra-thin panels because they do not require a backlight, allowing for a more compact design compared to LCD and LED displays.

What is a common size measurement unit for display screens?

• Feet

• Metres

• Inches

• Miles

Answer explanation

Display screens are commonly measured in inches, which provides a practical size reference for consumers. Feet and metres are less common for this purpose, while miles are not applicable for screen dimensions.

Which type of display is known for using organic compounds to emit light?

• LCD

• LED

• OLED

• Touch screen

Answer explanation

OLED stands for Organic Light Emitting Diode, which uses organic compounds to emit light. Unlike LCD and LED, which rely on backlighting, OLED displays produce their own light, allowing for better contrast and color accuracy.

What is the primary resource consideration when choosing a display screen for a high-performance computer?

• Screen size

• Memory and processing power

• Backlight type

• Display type

Answer explanation

When selecting a display screen for a high-performance computer, memory and processing power are crucial as they determine the system's ability to handle high-resolution graphics and multitasking effectively.

Which display type typically offers the best contrast ratio?

• LCD

• LED

• OLED

• Touch screen

Answer explanation

OLED displays offer the best contrast ratio because they can turn off individual pixels completely, resulting in true blacks and vibrant colors, unlike LCD and LED displays that rely on backlighting.

Which display type is most likely to be used in a device that requires a flexible screen?

• LCD

• LED

• OLED

• Touch screen

Answer explanation

OLED displays are known for their flexibility, making them ideal for devices requiring flexible screens. Unlike LCD and LED, OLED technology allows for thinner and bendable designs, enhancing versatility in modern devices.