The most frequent autonomic symptoms associated with multiple system atrophy are a sudden drop in blood pressure upon standing (orthostatic hypotension), urinary difficulties, and erectile dysfunction in men.
The IBM Selectric typewriter was a highly successful model line of electric typewriters introduced by IBM on 31 July 1961.
The typewriter keyboard was invented with the typewriter in 1868  by Americans Christopher Latham Sholes, Frank Haven Hall, Carlos  Glidden and Samuel W. Soule in Milwaukee,â¦ Wisconsin. This  eventually became the computer keyboard by way of the teletype  keyboard and keypunch machines.