Lynne Teaches Tech

Lynne Teaches Tech: What do all the parts of a URL or hyperlink mean?

Last Updated on May 5, 2019when you access a website in your browser, its URL (Universal Resource Location) will almost always start with either https:// or http://. this is known as the schema, and tells the browser what type of connection it’s going to be using, and how it needs… Read More »Lynne Teaches Tech: What do all the parts of a URL or hyperlink mean?

Lynne Teaches Tech: Why does compressing a JPEG make it look worse, even though putting in a ZIP file makes it look the same?

Last Updated on May 5, 2019there are many different methods of file compression. one of the simplest methods is run length encoding (RLE). the idea is simple: say you have a file like this:aaabbbbaaaaayou could store it as:a3b4a5to represent that there are 3 a’s, 4 b’s, etc. you would then… Read More »Lynne Teaches Tech: Why does compressing a JPEG make it look worse, even though putting in a ZIP file makes it look the same?

Lynne Teaches Tech: why don’t windows programs work on a mac, and vice versa?

Last Updated on May 5, 2019an operating system (OS), such as windows or macOS, handles a lot of low-level stuff. this means that developers don’t have to worry about details like “how to scroll a page” or “how to read text from a file”, because the OS handles it for… Read More »Lynne Teaches Tech: why don’t windows programs work on a mac, and vice versa?

Lynne Teaches Tech: what is the “analogue loophole”?

Last Updated on May 5, 2019the “analogue loophole” (or the analog loophole) refers to the idea that no matter how hard you try to make sure nobody can make illegal copies of videos, music, or text, there’s always a “hole” in the protection that occurs when it’s no longer digital.… Read More »Lynne Teaches Tech: what is the “analogue loophole”?