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CPU
The central processing unit (CPU) is the main control center of a PC. The CPU interprets, processes and executes instructions, most often from the hardware and software programs running on the device. The CPU performs arithmetic, logic, and other operations to transform data input into more usable information output. While the CPU must contain at least one processing core, many contain multiple cores. A server with two hexa-core CPUs, for example, will have a total of 12 processors.
SSD
The Solid State Drive (SSD) is a semiconductor-based storage device, which typically uses NAND flash memory to save persistent data. Solid-state technology is transforming the storage with high speed flash memory. Each NAND flash memory chip consists of an array of blocks, also known as a grid, and within each block, there is an array of memory cells, known as pages or sectors. The number of bits stored in each cell can vary, and they are typically categorized as either single-bit cells
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