PC COMPONENTS DISK DRIVES AND CONNECTORS. HARD DISK DRIVES Common Hard Drive Types: –ESDI -...
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Transcript of PC COMPONENTS DISK DRIVES AND CONNECTORS. HARD DISK DRIVES Common Hard Drive Types: –ESDI -...
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PC COMPONENTSDISK DRIVES AND CONNECTORS
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HARD DISK DRIVES• Common Hard Drive Types:
– ESDI - Enhanced Small Device Interface Old Technology
– IDE - Integrated Drive Electronics 90% of all drives
– EIDE - Enhanced IDE – SCSI - Small Computer Systems Interface
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DISK TERMS
• Sectors– The minimum unit of data that you can read
from or write to a disk. Sectors are organized into 512 byte groups.
• Tracks – Groups of sectors. The number of tracks is
dependant on the size of the disk drive.
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DISK TERMS
• Cylinders– Groups of tracks
• Heads– Electromagnetic “heads” that read and write to
the disk
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DRIVE INTERFACES
Common Interfaces:• SCSI
– Small Computer Systems Interface
• IDE – Integrated Drive Electronics
• EIDE– Enhanced Integrated Drive Electronics
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CMOS (BIOS) SETTINGS
•Information needed for hard drive setting:
– Drive type number– Number of heads – Number of cylinders
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There are many common types of floppy disk drives used to store data:• 3.5”
– 720 K (older technology)– 1.44 MB– 2.88 MB
• 5.25” (older technology)– 360 K– 1.2 MB
FLOPPY DISK DRIVES
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FLOPPY DISK DRIVE CABLE RULES
• Drive A: connector at the end of the cable
• Drive B: connector in the middle of the cable
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FLOPPY DISK DRIVE CABLE
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EXTERNAL COMPONENTS
• Keyboard• Mouse• Monitor• Modem (internal/external)• Video Card• Sound Card• CD-ROM Drive
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CONNECTORS Centronics Connector
DIN Connector
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25 Pin Male/FemaleD Shell Connector
9 Pin Male/FemaleD Shell Connector
CONNECTORS
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CONNECTORS
15 Pin (3 rows) Female D Shell Connector
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CONNECTORS
50 - 68 Pin Female D Shell Connector