When we save a document, it gets written somewhere "non-volatile" that keeps its state even when the power is off. How does that work for a hard drive? <br />video credit http://stanford.io/1flSniD under the CC Attribution Sharealike 3.0 license <br /> <br />photo credit: <br />https://www.flickr.com/photos/alangley/ <br />photo url: http://bit.ly/2kyZubd CC Attribution <br />Sharealike 3.0 license
