AllYouCanTech

National Center for Health Research. Since this is a surface you probably interact with every day, it is smart to sanitize it consistently.

How frequently should a keyboard be sanitized? Several elements can affect the response to that inquiry, such as how often you operate your keyboard. Nevertheless, according to research published in the African Journal of Microbiology, it is recommended to wipe down your keyboard and associated computer devices a minimum of once weekly. You will comprehend the reason once you learn just how much bacteria your keyboard might harbor.

USB-C Vs. 3.5mm – Which Port Provides Superior Audio Quality?

Take a stroll, and you’ll likely notice many individuals sporting wireless headphones, particularly AirPods and Marshall’s Major V. Even though smartphones have largely eliminated wired earbuds, there’s a resurging trend indicating that wired headphones are returning. However, when you opt for wired headphones, you must decide between a classic 3.5mm headphone jack or the newer USB-C port, which leads to the question: which one is better? Nearly every audiophile will tell you that the answer lies in a digital connection accompanied by a high-quality external Digital-to-Analogue converter (DAC), commonly via a USB-C adapter or device where you attach your usual 3.5mm headphones.

Nonetheless, the answer revolves more around the DAC than the port. A 3.5mm jack depends solely on the internal audio hardware of the device, including its DAC and amplifier, while USB-C generally transmits the audio as a digital signal without converting it, assigning that responsibility to an external DAC, whether that’s in a dongle (adapter) or integrated into the headphones. This implies that USB-C can provide superior audio configurations, offering clearer sound, increased power, and reduced distortion, but this is contingent upon the quality of the external hardware.

For the majority of users utilizing standard headphones or included adapters, the difference is minimal enough that overthinking it isn’t necessary. Nevertheless, comprehending the distinctions between analog and digital audio can assist you in determining what is preferable based on your setup and your preferences.

Analog vs. digital audio: the fundamental difference is in audio transmission

The 3.5mm headphone jack outputs analog audio, meaning your device has already transformed the digital music file into a signal that your headphones can replicate. In this case, the audio quality hinges entirely on the device’s built-in DAC and amplifier, designed for everyday use rather than high-fidelity audio performance.

With USB-C, the signal remains digital for an extended period. Instead of converting the audio within the phone, the outcome relies on what you connect to it, whether a dongle, USB-C headphones, or a dedicated external DAC. That being said, using USB-C configurations can achieve higher audio quality, as external DACs do not face the same constraints of size, power, or cost as a smartphone’s internal components or other devices. However, this also implies that achieving better sound might come at a higher cost, as additional components are involved in the process.

Ultimately, with a 3.5mm jack, the sound quality is determined by the phone, while with USB-C, the outcome is contingent upon the quality of the external hardware, whether it’s the adapter, the DAC, or the headphones. In simpler terms, analog audio is consistent, while USB-C offers greater flexibility for an enhanced experience.

Here’s how audio setups leverage analog and digital outputs

Smartphone manufacturers generally eliminated the 3.5mm headphone jack to conserve space, enhance water resistance, and promote wireless audio. Consequently, modern smartphones have transitioned audio into a modular system, as the file conversion occurs in whatever device it’s connected to. Observing professional audio equipment clarifies this point.

For instance, audiophiles utilize specialized DAC/amp units like the Chord Mojo 2 for exceptional audio quality. These high-end setups typically favor USB-C connections because separating the DAC from the source permits better components, more power, and finer control over sound quality. In contrast, a 3.5mm jack operates as a closed system and remains restricted by the device’s internal hardware, whether it be a laptop, tablet, or speaker.

In summary, USB-C won’t magically enhance your music’s sound quality. It’s also dependent on the source, be it a music streaming service, a proper uncompressed file, and the equipment you are using. This is why, for most users, the distinction between 3.5mm and USB-C doesn’t carry much significance, as many aren’t eager to invest considerable money. Still, if you seek to elevate your listening experience, a digital connection with a quality external DAC is the optimal solution.

In contrast to common understanding, you cannot recharge lithium-ion batteries endlessly, not even in MacBooks. Eventually, you will have to swap out the battery in your laptop, if not the whole device – this need arises sooner if you maintain poor daily habits with your laptop. While there are numerous indicators that your battery is nearing the end of its life, MacBooks can actually provide an estimate of how much battery life remains. Or at least approximate it based on the total power cycles. As per Apple, you can gauge your laptop battery’s remaining lifespan through the System Information menu on your computer. To find this information:

– Press and hold the Option key and click on the Apple menu.
– Choose “System Information.”
– Expand the “Hardware” dropdown menu, and then click on “Power.”

The data you need is labeled “Cycle Count,” found under “Health Information.” This section will also inform you about the battery’s condition and whether it is experiencing a decline in charge capacity (shown under “Maximum Capacity”).

The “Cycle Count” detail is quite straightforward, as it merely presents a number. Apple also offers a comprehensive list of the “Maximum Cycle Count” applicable to each MacBook model, which indicates the maximum instances you can safely charge the battery. For example, if you possess an M5 Max MacBook Pro (considered one of the finest models available today), and your “Cycle Count” reads 126, you still have a substantial amount of time before needing to replace your MacBook’s battery.

One full charge doesn’t equate to one battery cycle.

When you encounter the term “battery cycle,” you might think it signifies that each time you recharge your battery, it counts as one cycle. Nonetheless, the chemistry of a rechargeable lithium-ion battery operates differently. Apple clarifies that a battery charge is determined by how much power the charger replaces. Suppose one day you utilize 90% of the MacBook’s battery and then recharge it overnight. This does not constitute a full battery cycle but rather 90% of one — although the System Information menu won’t indicate this.

However, the next instance your laptop operates on battery power and is afterwards plugged in, as long as you consume at least 10% of the stored energy, your MacBook will acknowledge it as one entire battery cycle. While many may suggest that leaving a laptop plugged in all the time is unwise, you can do so, provided your MacBook is running macOS Catalina 10.5.5.

This update introduces an option to enable “optimized battery charging,” which limits the battery charge to 80%. You will need to recharge it more frequently once you unplug the laptop, but battery cycles won’t accumulate as rapidly since the computer is not reaching full charge. Always ensure your MacBook is running the latest macOS (and rectify it if it isn’t) to receive more beneficial updates like this.