Since the invention of the typewriter in the 1860s, there has been little change to the keyboard used in English.  The position of the letters has remained the same, and the numbers and punctuation have as well. The advent of the personal computer has required additional keys, most of which have found their own standard spots on the keyboard, but for the most part, there haven’t been many changes to the original design. Keyboard from an Underwood No. 5 typewriter, circa 1900. If you look at the above keyboard, you can see there have been some changes. Keys for fractions don’t really exist anymore; nor does a key to write the ¢ symbol. But the ¢ key on this 1900 model typewriter also includes the @ symbol, which has been common on keyboards since the dawn of typewriters. It’s older than that, even. But of course it is: how else would anyone write an email address? Except… who are you going to email in 1900? No one was emailing anyone before 1972. That’s when program...