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 QWERTY layout is based on the keyboard design for the original typewriter. Photodisc/Getty Images. In 1874 Remington & Sons manufactured the first commercial typewriter, called the Remington Number 1. This typewriter was designed by Christopher Sholes and used the QWERTY keyboard we are all familiar with.