Both these effects reduce the workload of the heart, so beta blockers are of value in treating the symptoms of angina pectoris, the chest pain brought on by narrowing of the coronary arteries that causes inadequate delivery of oxygen-rich blood to the heart muscle.
3 1. The invention and the history of the Dell computer is quite interesting. First of all, it was in 1984 when Michael Dell, a student at the University of Texas at Austin, created the company PC's Limited. He only had a starting capital of $1,000.
About Dell Inc. Dell manufactures, sells and supports computers and related products and services. Dell's Home Office/Consumer class of PC products emphasizes value, performance, and expandability. Dell's Peripherals class includes USB keydrives, LCD televisions, and printers; Dell monitors includes LCD TVs, plasma TVs and projectors for HDTV and monitors.