Step 1 : Introduction to the question "In computer lingo, what does "KB" stand for?"
...Computers measure the amount of information they contain in terms of kilobytes (KB), megabytes (MB), gigabytes (GB) and terabytes (TB.) The kilobyte, or KB, is about 1000 bytes. (Some consider it 1024 bytes but that amount is technically a kibibyte.) One typed character makes up one byte. To put it into context, an email that contains no images is about 2 KB in size. A five-page researched paper, again with no images, may be up to 100 KB or more. Ordinary Roman-style alphabetic text takes about 2 kilobytes, at one byte per letter, to store a typical page of text. Source: Web.Standford.Edu