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 has over 70,000 employees and is the worldâs largest provider of data storage systems by marketshare, competing against NetApp, IBM, Hewlett-Packard, and Hitachi Data Systems (arranged in descending order of external data storage marketshare).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.