Arithmetic and Logic Unit is responsible for carrying out all arithmetic and logical operations. Several cores together make up a processor. Further certain processors have Graphics Processing Units ( GPU) inside them where a GPU is also made of small and less powerful cores.Ī core is the basic computational component of a processor. Moreover, a processor can contain a memory controller and an input-output controller but depending on the architecture sometimes they can be located in the chipset that is outside of the processor. Also, it has a last level cache which is known as the 元 cache which is common to all the cores. A multicore processor also has the interface that connects all the cores to the outside world. These multicore processors can execute several instructions simultaneously depending on the number of cores.Ī processor apart from cores, also has the interface that connects the device to the outside world. So a multicore processor is like a package that has several processors called cores inside it. So a dual-core processor has two cores inside the processor and a quad core processor has four cores inside it. Then multi-core processors were introduced where a single processor had several processors in it known as cores. The Pentium series is an example for single core processors. Processors which only have one core in them are called single core processors. Traditionally a processor could execute only one instruction at a time.
Also, it has a set of registers to store values. Traditionally a processor consists of a component called Arithmetic and Logical Unit (ALU), which is responsible for all arithmetical and logical operations and another component called Control Unit (CU) which is responsible for all control operations. These instructions involve arithmetical, logical, control and input-output operations. Processor that is also known as the Central Processing Unit (CPU) is the most important part of a computer system which is responsible for executing program instructions. A core can execute only one program instruction at a time (can execute several if hyper-threading capability is available) but a processor which is made of several cores can execute several instructions simultaneously depending on the number of cores.
A multi-core processor has several cores inside the processor package where a core is the most basic computational unit of a processor. A traditional processor such as a Pentium processor has only one core inside the processor, but modern processors are multi-core processors. It is responsible for all the core functions such as arithmetical, logical and control operations. Processor or the CPU is like the brain of the computer system. Difference between processor and core can be a puzzling topic if you are not computer savvy.
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