Certain substances can contribute to an abnormal/irregular heartbeat, including: 1  Caffeine. 2  Tobacco. 3  Alcohol. 4  Cold and cough medications. 5  Appetite suppressants. 6  Psychotropic drugs (used to treat certain mental illnesses) 7  Antiarrhythmics (paradoxically, the same drugs used to treat arrhythmia can also cause arrhythmia.
Founded as an independent company in 1982, RSA Security, Inc. was acquired by EMC Corporation in 2006 for US$2.1 billion and operates as a division within EMC. RSA is based in Bedford, Massachusetts, with regional headquarters in Bracknell (UK) and Singapore, and numerous international offices.
EMC sells data storage, information security, virtualization, analytics, cloud computing and other products and services that enable businesses to store, manage, protect, and analyze data.EMC's target markets include large companies and small-and medium-sized businesses across various vertical markets.The stock was added to the New York Stock Exchange on April 6, 1986, and is also listed on the S&P 500 index.MC, founded in 1979 by Richard Egan and Roger Marino (the E and M in EMC), introduced its first 64-kilobyte memory boards for the Prime Computer in 1981 and continued with the development of memory boards for other computer types.