CPU (Central Processing Unit)




About CPU (Central Processing Unit)

About CPU (Central Processing Unit)

A central processing unit (CPU), also called a central processor or main processor, is the electronic circuitry within a computer that carries out the instructions of a computer program by performing the basic arithmetic, logic, controlling, and input/output (I/O) operations specified by the instructions.

The form, design, and implementation of CPUs have changed over the course of their history, but their fundamental operation remains almost unchanged.

Principal components of a CPU include the arithmetic logic unit (ALU) that performs arithmetic and logic operations, processor registers that supply operands to the ALU and store the results of ALU operations and a control unit that orchestrates the fetching (from memory) and execution of instructions by directing the coordinated operations of the ALU, registers and other components.

Most modern CPUs are microprocessors, meaning they are contained on a single integrated circuit (IC) chip. An IC that contains a CPU may also contain memory, peripheral interfaces, and other components of a computer; such integrated devices are variously called microcontrollers or systems on a chip (SoC). Some computers employ a multi-core processor, which is a single chip containing two or more CPUs called “cores”; in that context, one can speak of such single chips as “sockets”.

Array processors or vector processors have multiple processors that operate in parallel, with no unit considered central. There also exists the concept of virtual CPUs which are an abstraction of dynamical aggregated computational resources.

A

A-GPS (Assisted GPS)A2DP (Advanced Audio Distribution Profile)AAC (Advanced Audio Coding)Airplane ModeAlarm ClockAMOLED (Active-matrix organic light-emitting diode)Analog TechnologyAndroid Operating SystemAntennaApertureAPN (Access Point Name)Apple iOS

B

Band Bandwidth Battery Charging Biometrics Bit BlackBerry OS Bluetooth Bps (Bits per Second) Brand Broadband Browser Byte

C

Camera Capacitive Touchscreen Car Kit Carrier CDMA (Code-Division Multiple Access) Cell Chipset CIF (Common Intermediate Format) Connected GPS Corning Gorilla Glass CPU (Central Processing Unit)

D

DC-HSDPA (Dual Carrier or Dual Cell High-Speed Downlink Packet Access) Dual-band Dual-Mode Dual-SIM Dynamic Memory

E

EDGE (Enhanced Data for Global Evolution) EDR (Enhanced Data Rate) EGPRS EGSM (Extended GSM)

F

Firmware Flash Memory Flight mode FM Radio Frequency FTP (File Transfer Protocol)

G

Galileo (Global Navigation Satellite System) GB (Gigabyte) Gbps (Gigabits per second) Geo-tag GLONASS (Global Navigation Satellite System) GPRS GPS (Global Positioning System GPU (Graphics Processing Unit)

H

H.263 H.264 H.265 Handwriting recognition Hot Spot HSCSD (High-Speed Circuit Switched Data) HSDPA (High-Speed Downlink Packet Access) HSDPA+ (High-Speed Downlink Packet Access Plus) HSP (Headset Profile) HTML (Hypertext Markup Language) Hz (Hertz)

I

iDEN (Integrated Digital Enhanced Network) Image Signal Processor (ISP) IMEI (International Mobile Equipment Identity)

J

Java

K

KB (Kilobyte) Kbps (Kilobits per second) Key Guard

L

LCD (Liquid Crystal Display) LED (Light-Emitting Diode) Li-Ion (Lithium Ion) Li-Polymer (Lithium Polymer) Loudspeaker

M

Macro Magnetometer mAh MB (Megabyte) Mbps (Megabit per second) Megapixel Memory card slot Memory effect Messaging MHz (Megahertz) Micro USB microSD microSDHC MIDI (Musical Instrument Digital Interface) MIDP (Mobile Information Device Profile) MMS (Multimedia Messaging Service) Mobile games Mobile High-Definition Link (MHL) Mobile IM (Instant Messaging) Modem Monochrome MP3 (MPEG Layer 3) MPEG (Motion Picture Experts Group) MPEG-4 video Multitouch input method Music playback time (battery life) Music Player

N

NAND Memory Network capacity Network coverage NOR Memory Numeric keypad

O

OEM (Original Equipment Manufacturer) OLED (Organic Light-Emitting Diode) Optical Zoom OS (Operating System) OTA (Over-The-Air) OTG

P

PCS (Personal Communications Service) PDA (Personal Digital Assistant) Pixel Pixel density (Pixels Per Inch) Price PTT (Push-To-Talk) Push

Q

Quad-band QVGA (Quarter Video Graphics Array) QWERTY keyboard layout

R

RAM (Random-Access Memory) RBDS (Radio Broadcast Data System) RDS (Radio Data System) Resistive touchscreen Resolution Ringtone Roaming ROM (Read-Only Memory) RS-MMC (Reduced-Size Multi Media Card)

S

Screen protection SD (Secure Digital) Secondary camera Sensors SIM SIM lock Single-Band Smart Watch Smartphone SMS (Short Messaging Service) Speed Dial Stand-by time (battery life) Stereo Speakers Streaming Video Stylus

T

Talk time (battery life) Tethering Text messaging (texting) Touchscreen Tri-band

U

UI (User Interface) UMTS UPnP (Universal Plug and Play) USB (Universal Serial Bus) USB On-The-Go USIM

V

VGA (Video Graphics Array) Video call Voice dialing Voice mail VPN (Virtual Private Network)

W

WAP (Wireless Application protocol) WCDMA(Wideband Code Division Multiple Access Wearable Technology Wi-Fi Windows Mobile Windows Phone OS WLAN WMV (Windows Media Video)

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