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.
For the new company and its subsidiary, see Dell Technologies and Dell (subsidiary). For other uses, see Dell (disambiguation). Dell Inc. (stylized as DELL) is a multinational computer technology company based in Round Rock, Texas, that develops, sells, repairs, and supports computers and related products and services. The company is a subsidiary of Dell Technologies, which was formed by the 2016 merger of Dell Inc. and EMC.