Recent comments in /f/explainlikeimfive

tomNJUSA t1_j6j7h0n wrote

Reply to eli5: Why do most airlines still use 2-pin audio jacks for the in-flight entertainment systems on their planes? by JJGLC92

They used to have "air tubes". You plugged in a two pin plug that was just a hollow tube. No electronics. This would connect to bigger tubes below the seat. The sound would be sent through the tube. They actually had a few different channels. The sound was OK but the best part was all of the second hand smoke. The 70's were fun.

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maveric_gamer t1_j6j6o9r wrote

Reply to ELI5: What exactly is Random Access Memory? by FilmFrench

RAM is where your computer stores either the active program(s) it's running, or portions thereof - basically whenever you run a program on your computer, it takes the data from your long-term storage and makes a copy in RAM (or again, a portion of it) which your computer then operates against - basically part of the set of commands your computer can understand is "read/write/delete data from memory at address [x]" where "[x]" is a number that is assigned to a certain part of your RAM - programs will write values into those, and using tons of layers of abstraction, use those numbers to control your computer in the way you want.

When you are using Windows (or Mac OSX), that operating system loads itself into RAM when you turn your computer on, and that program knows how to access your hard drive(s) and pull other programs out and tell your computer how it should run them.

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coren77 t1_j6j5yy0 wrote

Reply to ELI5: why does mobile data either get really bad or automatically disconnect when making a call. Then gets restored once the call ends. by ShadoWalker123

What's more irritating to me is that my phone (s22) drops my mobile connection when I make a *data* call. So if I use my company's voip (ringcentral), or even a mobile appointment with a doctor, I'll lose 4g/5g, and thus the entire call. The issues resolve if I use a VPN. If I'm fast enough getting the VPN on after the call drops, I can pick them back up in 5 to 10 seconds.

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wbafan t1_j6j4poy wrote

Reply to ELI5: why does mobile data either get really bad or automatically disconnect when making a call. Then gets restored once the call ends. by ShadoWalker123

Usually phones have some components that are shared for different connection bearers. Some phones can do both voice calls and internet traffic through 3-4-5G due to additional modulator-demodulator-antenna. Some don't because they have only one mod-demod-antenna and the system prioritizes calls over internet traffic. This doesn't happen when you are connected via WiFi, there are other components handling the processes there.

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Flair_Helper t1_j6j4emc wrote

Reply to Eli5 Why gas turbine can rev at >10000 rpm but diesel engine red lone at 3000-4000 rpm? by sepientr34

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