Central Processing Unit (CPU)
The Central Processing Unit (CPU) is the command center in a computer or mobile computing device, hosted on the device's microprocessor. The CPU takes in commands and executes them. In multi-core CPUs, more commands can be executed at once.
Single-core CPUs have traditionally powered smart-phone and tablet devices, but dual-core processors and even tri- and quad-core CPU-powered devices are being introduced in 2011. (See CES 2011: Top 10 Cool Things at CES, CES 2011: Acer Demos Dual-Core Tablets, CES 2011: OS Watch Goes Gadgets, Moto, AT&T Intro Atrix 4G and Samsung & LG Dual It Up.)
Companies that make CPUs include Intel Corp. (Nasdaq: INTC), Texas Instruments Inc. (NYSE: TXN), Advanced Micro Devices Inc. (NYSE: AMD), Marvell Technology Group Ltd. (Nasdaq: MRVL), Qualcomm Inc. (Nasdaq: QCOM), Samsung Corp. , Freescale Semiconductor Inc. and Nvidia Corp. (Nasdaq: NVDA).