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computer hardware1

chapter 8

QuestionAnswer
An IDE cable that has 40 pins but uses 80 wires, 40 of which are ground wires designed to reduce crosstalk on the cable. The cable is used by ATA/66 and higher IDE drives. 80-conductor IDE cable
a nonprofit organization dedicated to creating trade and communications standards. ANSI(American National Standards Institute)
Specification developed by Intel, Compaq, Phoenix, Microsoft, and Toshiba to control power on computers and other devices. ATAPI( Advanced technology Attachment Packet Interface)
A feature of system BIOS and hard drives that automatically identifies and configures a new drive in BIOS setup. autodetection
A method of data transfer between hard drive and memory that allows multiple data transfers on a single software interrupt. block mode
The first sector of a floppy disk or hard drive volume; it contains information about the disk or volume. On a hard drive, if the boot record is in the active partition, then it can be used to boot the OS. boot record
One or more sectors that constitute the smallest unit of space on a disk for storing data (also referred to as a file allocation unit). Files are written to a disk as groups of whole clusters. cluster
A transfer mode used by devices, including the hard drive, to transfer data to memory without involving the CPU. DMA(direct memory access transfer mode)
A standard for managing the interface between secondary storage devices and a computer system. A system can support up to four parallel ATA IDE devices such as hard drives, CD-ROM drives, and DVD drives. EIDE(Enhanced IDE)
A standard for external drives based on SATA that uses a special external shielded SATA cable up to 2 meters long. eSATA is up to six times faster than USB or FireWire. external SATA(eSATA)
The 12-bit wide, one-column file allocation table for a floppy disk, containing information about how each cluster or file allocation unit on the disk is currently used. FAT12
One or more sectors that constitute the smallest unit of space on a disk for storing data (also referred to as a file allocation unit). file allocation unit
A drive that can hold either a 5 inch or 3 inch floppy disk. Also called floppy drive. floppy disk drive
the firmware that controls access to the hard drive contained on a circuit board mounted on or inside the hard drive housing. hard drive controller
The top or bottom surface of one platter on a hard drive. Each platter has two heads. head
Formatting performed by the Windows Format program (for example, FORMAT C:/S), the Windows installation program, or the Disk Management utility high-level formatting
A drive that can hold either a 5 inch or 3 inch floppy disk. Also called floppy drive. floppy disk drive
A hard drive whose disk controller is integrated into the drive, eliminating the need for a controller cable and thus increasing speed, as well as reducing price. IDE
the firmware that controls access to the hard drive contained on a circuit board mounted on or inside the hard drive housing. hard drive controller
A process (usually performed at the factory) that electronically creates the hard drive tracks and sectors and tests for bad spots on the disk surface. low-level formatting
A number assigned to a logical device (such as a tray in a CD changer) that is part of a physical SCSI device, which is assigned a SCSI ID. Logical Unit Number
The top or bottom surface of one platter on a hard drive. Each platter has two heads. head
A process (usually performed at the factory) that electronically creates the hard drive tracks and sectors and tests for bad spots on the disk surface. low-level formatting
An older IDE cabling method that uses a 40-pin flat or round data cable or an 80- conductor cable and a 40-pin IDE connector. parallel ATA
Formatting performed by the Windows Format program (for example, FORMAT C:/S), the Windows installation program, or the Disk Management utility high-level formatting
A transfer mode that uses the CPU to transfer data from the hard drive to memory. PIO mode is slower than DMA mode. PIO
An older IDE cabling method that uses a 40-pin flat or round data cable or an 80- conductor cable and a 40-pin IDE connector. transfer mode
A sealed, magnetic coil device that moves across the surface of a disk either reading data from or writing data to the disk. read/write head
A transfer mode that uses the CPU to transfer data from the hard drive to memory. PIO mode is slower than DMA mode. PIO
A fast interface between a host adapter and the CPU that can daisy chain as many as 7 or 15 devices on a single bus. SCSI
The circuit board that controls a SCSI bus supporting as many as seven or fifteen separate devices. The host adapter controls communication between the SCSI bus and the PC. host adapter
A number from 0 to 15 assigned to each SCSI device attached to the daisy chain. SCSI ID
A sealed, magnetic coil device that moves across the surface of a disk either reading data from or writing data to the disk. read/write head
An ATAPI cabling method that uses a narrower and more reliable cable than the 80-conductor cable. See also parallel ATA. serial ATA
A hard drive whose disk controller is integrated into the drive, eliminating the need for a controller cable and thus increasing speed, as well as reducing price. IDE
An IDE cable that is narrower and has fewer pins than the parallel IDE 80-conductor cable. Serial ATA cable
The resistor added at the end of a SCSI chain to dampen the voltage at the end of the chain. terminating resistor
A number from 0 to 15 assigned to each SCSI device attached to the daisy chain. SCSI ID
A number assigned to a logical device (such as a tray in a CD changer) that is part of a physical SCSI device, which is assigned a SCSI ID. Logical Unit Number
An ATAPI cabling method that uses a narrower and more reliable cable than the 80-conductor cable. See also parallel ATA. serial ATA
A process (usually performed at the factory) that electronically creates the hard drive tracks and sectors and tests for bad spots on the disk surface. low-level formatting
An IDE cable that is narrower and has fewer pins than the parallel IDE 80-conductor cable. Serial ATA cable
Formatting performed by the Windows Format program (for example, FORMAT C:/S), the Windows installation program, or the Disk Management utility operating system formatting
An older IDE cabling method that uses a 40-pin flat or round data cable or an 80- conductor cable and a 40-pin IDE connector. parallel ATA
a method of storing data zone bit recording
A transfer mode that uses the CPU to transfer data from the hard drive to memory. PIO mode is slower than DMA mode. PIO
transfer mode
A sealed, magnetic coil device that moves across the surface of a disk either reading data from or writing data to the disk. read/write head
A fast interface between a host adapter and the CPU that can daisy chain as many as 7 or 15 devices on a single bus. SCSI
A number from 0 to 15 assigned to each SCSI device attached to the daisy chain. SCSI ID
An ATAPI cabling method that uses a narrower and more reliable cable than the 80-conductor cable. See also parallel ATA. serial ATA
An IDE cable that is narrower and has fewer pins than the parallel IDE 80-conductor cable. Serial ATA cable
The resistor added at the end of a SCSI chain to dampen the voltage at the end of the chain. terminating resistor
a method of storing data zone bit recording
Created by: kevpaul