2 Mobile Hardware and Components Free Online FlashCards

What does the CPU do?

The CPU runs program instructions and coordinates system tasks.

What is the GPU's main role?

The GPU produces images for the display and accelerates graphics-heavy work.

What is an SoC, and why is it useful in mobile devices?

An SoC combines the CPU, GPU, and often other controllers on one chip, saving space and potentially reducing power use.

What is RAM used for, and what happens when power is lost?

RAM is fast, temporary working space for the operating system and currently running apps. It is cleared when the device loses power.

What does device storage retain when the device is off?

Storage keeps the operating system, apps, and user files even when the device is off.

What does a touchscreen digitizer detect?

The digitizer detects the position of a finger or stylus; the display panel produces the image.

How do LCD and OLED panels produce light differently?

LCD panels use a backlight, while OLED panels create light with individual pixels.

What can a higher display refresh rate change?

A higher refresh rate can make motion appear smoother, though it may also affect power use.

Why doesn't battery capacity alone determine device runtime?

Battery capacity alone does not determine runtime; brightness, processor activity, wireless use, battery age, and software also matter.

How should you handle a swollen or damaged battery?

A swollen or damaged battery is a safety hazard. Do not puncture or press on it; follow the device maker’s service guidance.

What components help a camera system produce a photo or video?

A camera module typically includes a lens and image sensor; image-processing hardware and software help produce the final photo or video.

What is the role of a motherboard or system board?

The motherboard or system board connects and supports major components, including the processor, memory, storage, and power circuitry.