Dell is a privately owned computer company that is ranked as one of the largest tech companies in the world. Founded in 1984, Dell is headquartered in Round Rock, Texas, and has offices around the globe, employing over 103,000 people. Dell is primarily known as a manufacturer and retailer of personal computers and ranks third worldwide in terms of gross sales. The company is also the leading provider of computer monitors and produces a number of computer peripherals and accessories, including keyboards, speakers and mice. The company also produces tablet computers, laptops and notebooks and retails electronics from a number of top brands.