Boots (yes the pharmacists) released branded typewriters in the 1970s and 1980s, and also this calculator too. The Boots 224 Memory is a nice late 1970s machine with a square root and percentage functions to go along with the basic four arithmetric functions. As the name implies, the calculator has memory too and works fine, numbers displayed using an eight digit VFD display. This is in fact a rebranded Casio Memory B-1.