Digitalis obscura that distinguishes it from the other foxgloves. Inside the flowers, red venation and spotting can also be seen as well as tiny hairs at the tips. The arrangement of the flowers in respect to the stalk is racemes and the flowers droop downward. "Digitalis obscura", like many of the other foxgloves, has been used in medicine as a diuretic and to treat heart conditions. For people suffering from heart disease or other heart-related conditions, it can be used to regulate heart rate. In human folk medicine, "Digitalis obscura" was used for many purposes, such as treating wounds and toothaches. However,
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