Submitted by unlikemike123 t3_z6wvdf in explainlikeimfive
therealpigman t1_iy3wumy wrote
Reply to comment by unlikemike123 in eli5 How is computer memory deleted? by unlikemike123
Some memory cards have the ability to write the deleted data with all 0s in the places, but that isn’t guaranteed behavior and usually takes more time and energy than allowing the old stuff to be overwritten
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