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A human computer, with microscope and calculator, 1952. It was not until the mid-20th century that the word acquired its modern definition; according to the Oxford English Dictionary, the first known use of the word computer was in a different sense, in a 1613 book called The Yong Mans Gleanings by the English writer Richard Brathwait: "I haue [] read the truest computer of Times, and the best ...
While quantum computers cannot solve any problems that classical computers cannot already solve, it is suspected that they can solve certain problems faster than classical computers. For instance, it is known that quantum computers can efficiently factor integers , while this is not believed to be the case for classical computers.
A programmer, computer programmer, or coder is a person who writes computer software. The term computer programmer can refer to a specialist in one area of computer programming or to a generalist who writes code for many kinds of software. One who practices or professes a formal approach to programming may also be known as a programmer analyst.
Older computers had IPC counts as low as 0.1 while modern processors easily reach nearly 1. Superscalar processors may reach three to five IPC by executing several instructions per clock cycle. [citation needed] Counting machine-language instructions would be misleading because they can do varying amounts of work in different ISAs.
They are capable of high-resolution and three-dimensional interfaces, and typically used to perform scientific and engineering work. [54] Like server computers, they are often connected with other workstations. [55] The main form-factor for this class is a Tower case, but most vendors produce compact or all-in-one low-end workstations.
With multiprocessors multiple CPUs share memory. A multicomputer or cluster computer has multiple CPUs, each of which has its own memory.Multicomputers were developed because large multiprocessors are difficult to engineer and prohibitively expensive; [18] they are universal in cloud computing because of the size of the machine needed. [19]
They are sometimes called 2-in-1 detachable laptops or tablet-laptop hybrids. [39] Mobile phones are designed to have an extended battery life and light weight, while having less functionality than larger computers. They have diverse hardware architecture, often including antennas, microphones, cameras, GPS devices, and speakers. Power and data ...
Inside a central processing unit: The integrated circuit of Intel's Xeon 3060, first manufactured in 2006. A central processing unit (CPU), also called a central processor, main processor, or just processor, is the most important processor in a given computer.
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