law of conservation of energy and computing

A question I've been mulling over for weeks, and wondering who to ask:

Computers use electrical energy and produce heat. Is the heat produced by computers less than the electrical energy consumed (I would assume so, but would like a definite answer!) and if so, what is that residual energy "stored in" computing? What happens to the energy when say the result of the computing is erased? A lot of the computing is just lost to the environment in general as well, so what happens there?

Trying to wrap my head around the law of conservation of energy in this special case.

Speedo Error

I recently calibrated my motorbike against GPS because my speedometer had stopped functioning on a 1200km ride, so I needed to have an idea of the speed from the tachometer. After 12 years and 150000+km of believing 5000 rpm in 5th gear was 80 km/h (the indicated speed on the speedo, when it was functioning), I was confronted by the fact that it was actually only 71 km/h! My first reaction was "it feels like my entire life has been a lie" 😂

ps: this was another forgotten draft... from March 2024! Strangely enough, Carly's tachometer (in fact, the entire meter console) failed a few months later. as of now it has a working backlight but only indicates high-beam, neutral and turn signals. I now adjust my speed based on the sound of the engine, and my biggest surprise was looking at my GPS speed and realizing I ride faster by sound... about 10 km/h faster than I think I am!

Locked!

My phone regularly changes the wallpaper even when locked. Today, it changed the clock from digital to analog, applied a "warm" filter to the wallpaper, added some random text and emoji to my "emergency contact" message on the home screen, and replaced the left shortcut from phone to some random app. When I took my phone out of my pocket I almost couldn't recognise it! 

On the plus side, I finally figured how to change the emergency contact message (I realized two months ago one of the digits of my emergency contact number was wrong - and it had been wrong for at least two phones/6 years now!)... so it evens out.

ps: posted from a forgotten draft from 11th April 2024

pps: I now protect myself from in-pocket shenanigans by always keeping my phone screen side up!