Digitalis "D. grandiflora", "D. lutea" and "D. parviflora". Larvae of the foxglove pug, a moth, consume the flowers of the common foxglove for food. Other species of Lepidoptera eat the leaves, including the lesser yellow underwing. The term "digitalis" is also used for drug preparations that contain cardiac glycosides, particularly one called digoxin, extracted from various plants of this genus. The name "foxglove" was first recorded in the year 1542 by Leonhard Fuchs, whose family name, Fuchs, is the German word for "fox" (the plant genus "Fuchsia" is also named for him). The genus "digitalis" is from the Latin "digitus" (finger),
Derive (computer algebra system) calculators. Derive (computer algebra system) Derive was a computer algebra system, developed as a successor to muMATH by the Soft Warehouse in Honolulu, Hawaii, now owned by Texas Instruments. Derive was implemented in , also by Soft Warehouse. The first release was in 1988 for DOS. It was discontinued on June 29, 2007 in favor of the TI-Nspire CAS. The last and final version is Derive 6.1 for Windows. Since Derive required comparably little memory, it was suitable for use on older and smaller machines. It was available for the DOS and Windows platforms and was used also in TI