As of October 2014, there were nearly 2 billion personal computers used worldwide. By comparison, the 1 billionth personal computer was shipped in 2002, although 1 billion computers were in use in 2008. Several research groups believe the 2-billion mark of PC usage will occur sometime in 2015 or 2016. Tablet computers and mobile devices are gradually gaining on PC usage.Know More
The difference between PCs in use and PCs shipped are due to several factors. Older computers get removed from service when companies and individuals buy newer models. Computers shipped from manufacturers are not necessarily sold at retailers. Personal computers are being replaced by smaller, faster models.
During 2013, more than 134.4 million PC units were shipped in the United States. In the third quarter of 2014, more than 78.5 million units were shipped from manufacturers, a decline of 1.4 percent from the third quarter of 2013. Lenovo, HP, Dell, Acer and Apple are the five largest personal computer manufacturers in the world, as of October 2014.
Predicted sales of desktop PCs will drop to just 5 percent of the market by 2017, with smartphones taking more than 70 percent of the market. More than 1.01 billion smartphone units, 227.3 million tablet computers and 180.9 portable PCs were shipped in 2013, all numbers that exceed desktop PC shipments in the same year.Learn more about Computers & Hardware
Using computers in the office has a number of advantages for almost any business of any size, including increased organization and more efficient business operation, particularly where sales, marketing and accounting are concerned, all of which can contribute to higher profit margins. Most businesses opt for the use of office computers and related technology as a result.Full Answer >
Network interface cards allow computers to connect to a network and to the Internet. Sometimes they are referred to as Ethernet cards or a network adapters; these terms refer to the same component. Network interface cards are usually part of the motherboard, but they can also be installed as an expansion card. Modern network interface cards can connect to networks via cable with an RJ-45 connector or wireless via Wi-Fi.Full Answer >
Mainframe computers are used to store large amounts of data that wouldn't fit into a normal-sized computer system. Mainframe computers are most often used by large corporations and government agencies that require a large amount of information to be stored in a centralized secure location. They are named after the large cabinets that were needed to house them when they were physically large.Full Answer >
Major technological advances that allow computers to run faster, decrease in size and become more efficient delineate the five generations of computers. First-generation computers used vacuum tubes, second-generation computers had transistors, while third-generation computers advanced to integrated circuits. Fourth-generation computers contain microprocessors, and future, fifth-generation devices will focus on artificial intelligence.Full Answer >