The Four Parts of a Computer. Definition of a Computer A computer is an electronic device used to process data, converting the data into information that.

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Presentation transcript:

The Four Parts of a Computer

Definition of a Computer A computer is an electronic device used to process data, converting the data into information that is useful to people

home Computers Consist of Four Parts Hardware Software Users Data

Hardware Mechanical devices that make up the computer

home Examples of Hardware Processor Memory Input and output devices Storage

Processing The procedure that transforms raw data into useful information is called processing The processor and memory perform this transformation

Processor The computer’s brain, which organizes and carries out instructions from either the user or the software

Motherboard Rigid rectangular card containing the circuitry that connects the processor to the other hardware

home Circuit board Motherboard is an example of a circuit board Attached to the motherboard are many smaller circuit boards that house many internal devices

Central Processing Unit (CPU) Refers to a computer’s processor

Memory When you launch a program, it is loaded into and run from memory

Random Access Memory (RAM) Determines a computer’s speed and power

home Memory Measurements Kilobyte (KB) Megabyte (MB) Gigabyte (GB) Terabyte (TB)

Input Devices Accept data and instructions from the user or from another computer system

home Most Common Input Devices Keyboard Mouse

Output Devices Return processed data to the user or to another computer system

home Most Common Output Devices Monitor Printer

Storage Holds data permanently

home Storage Terms Magnetic disk Read/write heads Disk drive Hard disk or hard drive Diskette drive Diskettes or floppy disks

home Storage Terms Continued CD-ROM drive Compact disks (CDs) Compact Disk-Read-Only Memory (CD- ROM) CD-Recordable (CD-R) CD-ReWritable (CD-RW) Digital Video Disk (DVD)

Software A set of electronic instructions consisting of complex codes, or programs, that make the computer perform tasks

home Examples of Software System software Application software

home Five Computer Categories Supercomputers Mainframe computers Minicomputers Workstations Microcomputers, or personal computers

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