A core may refer to any of the following:
1. In relation to computer processors, a core is the processing unit which receives instructions and performs calculations, or actions, based on those instructions. A set of instructions can allow a software program perform a specific function.
Processors can have a single core or multiple cores. A processor with two cores is called a dual-core processor and four cores is called a quad-core processor. Processors for home computers can even have six or eight cores. The more cores a processor has, the more sets of instructions the processor can receive and process at the same time, which makes the computer faster.
2. When referring to types of processors, the Intel Core, codenamed Yonah, is the successor to the Intel Pentium M and first introduced on January 5, 2006. The Intel Core is the computer processor used with laptop computers.
3. Memory used before RAM as we know it today. The picture is an example of a memory core used in the Atlas 1 computer that was 12-centimeters square and contained 64 cores, courtesy of Rutherford Appleton Laboratory.
4. Short for Core Dump, a core is used to describe when a computer, computer device, network device, or other related product errors and is unable to display a proper error message. When this issue occurs, a large listing of data is shown to help identify the cause of the issue or what was running when the problem happened.