In 1822, Charles Babbage first idealized a machine capable of making computations. In 1936, Alan Turing created the first modern-style computer, and Konrad Zuse created the first electronic-programmable computer. In 1942, John Vincent Atanasoff created the first digital computer. In 1953, IBM designed and marketed the first mass-produced computer.
Hewlett-Packard manufactured the first desktop computer in 1968, Intel created the first microprocessor in 1971 and Xerox designed the first workstation in 1974. By 1975, Ed Roberts coined the term "personal computer." The modern, personal computer results from a myriad of technological changes and development stages. The term computer has been used to describe everything from humans who make computations in the 16th century, to machines that filled entire rooms, to the contemporary hand-held tablet.