Helen writes, “I am getting married soon, and I wanted to get a tattoo to commemorate who I was before, something to remember my old name (as I am going to take my future husband’s surname when I get married), but I also wanted it to be a secret. So this is what I got…”

Carl: Helen wrote her name in ASCII, the lingua franca of computers. Before ASCII was developed in the 1960s, computers often had no way to send text to one another, with dozens of different systems for representing letters and numbers. Even after ASCII was created, it didn’t become common until 1981, when IBM used it for the first personal computers. Now ASCII is ubiquitous–a rare