Hardware Lesson 3 Inside your computer.

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Presentation transcript:

Hardware Lesson 3 Inside your computer

Hardware Review Motherboard Processor / CPU Bus Bios chip Memory Hard drive Video Card Sound Card Monitor/printer Ports

Software Software = Computer Program = Instructions Allow you to use your computer Without software, the computer is useful as a planter

Computer memory BIOS (flash memory) Read Only Memory (ROM) Random Access Memory (RAM) chips on motherboard open files Virtual (part of your OS) pagefile.sys Video graphics and games

Memory facts Stored in KB (kilobytes), MB (megabytes), GB (gigabytes), TB (terabytes) One MB ~ 1 million memory locations A memory location (byte) stores one character So, 512 MB will store about 512 million characters. One MB can store about 500 pages of text information

Booting order 1, 2, 3 . . . BIOS Operating System Utilities Windows or Linux OS X on an Apple UNIX on a Sun station Utilities AntiVirus software Internet security Application software

BIOS Stores date and time Basic hardware settings Memory and hard drive info Disk boot order Boot password Etc.

BIOS entry screen

BIOS boot disk setup

BIOS advanced setup

BIOS More info

Operating System Loads drivers (small software applications) to run all the hardware in your computer Video drivers Printer drivers Mouse and keyboard drivers Etc.

Operating Systems Windows Products Linux.org Apple Software Unix

Using Software When you open an application, memory must be used to store the program that’s running and the file you have open. Open files are stored in RAM chips. Physical chips Temporary storage of files and instructions When files are too big to fit in RAM, the excess goes to Virtual Memory (on the hard drive). The video is stored in Video memory, often in special chips on the Video card.

Creating Files Sometimes you don’t need to save … Listing to music Playing games Surfing the Net When you do need to save a file, you must select a storage device. In this class, you will save to your number; your personal drive on the school network. At home, you probably save to the C drive; the hard disk in your computer.

Storage devices Can be internal or external Measured in: Size (MB, GB, TB) Speed (mHz) Hard drive (contains disk) Floppy CD/DVD Flash – static devices (no moving parts) Floppy disk image from http://us.cdn2.123rf.com/168nwm/alan64/alan641105/alan64110500057/9495492-floppy-disk-drive-isolated-on-white-background.jpg

Hardware Lesson 3 Inside your computer

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