Unlike virtually every computer system in the world which uses a variant of ASCII, IBM mainframes and midrange systems such as the AS/400 tend to use a wholly incompatible character set primarily designed for ease of use on punched cards. (For an excellent page on punched cards, see Doug Jones's Punched Card Codes).
There are a few Keurig K-cups that DO contain calories. They fall under two categories. Brew Over Ice teas and coffees (except Twinings) and Cafe Escapes. Keurig has kept those around 60 calories each. When in doubt consider the consistency of the coffee. If it is creamy- it contains calories and most likely sugar. If it is a simple black coffee, calories are not an issue.
Descaling and Cleaning a Keurig Coffee Maker There might not be an easier or quicker way to brew a cup of coffee than to pop a K-Cup pod into a single-serve Keurig coffee maker. But Keurig machines need to be cleaned and descaled like any other coffee maker to ensure the coffeeâs flavor isnât diminished from the oily residue and that the machine is operating without technical issues.