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Why is the access time for a moving head disc drive greater than the access time for a fixed head disc drive?
The access time for a moving head disc drive is greater than that of a fixed head disc drive due to the physical movement required by the read/write head to reach the desired location on the disk. In a moving head drive, the head needs to physically move across the disk's surface to access different sectors, resulting in increased latency. In contrast, a fixed head drive has multiple heads dedicated to specific locations on the disk, allowing for quicker access times as the heads do not need to physically move.
What is the plural of disc jockey?
The plural of disc jockey is disc jockeys. As in "the disc jockeys went head-to-head in the challenge".
What is another name for the optic nerve head?
Another name for the optic nerve head is the optic disc.
Is there motor in DVD player?
There are several motors in disc players. First, there is a platen motor to rotate the disc. There are normally two motors for the laser head to move the laser across the disc and to raise and lower the head. These keep the laser tracking the disc correctly. Finally, there is a motor to open and close the disc tray.
What are the four main parts of a computer hard drive?
Platter(s)Read/Write Head(s)Access Arm(s)Servo
What is the most important part of a CD?
The most important part of an optical disc drive is an optical path, placed in a pickup head (PUH),[1] usually consisting of semiconductor laser, a lens for guiding the laser beam, and photo-diodes detecting the light reflection from disc's surface.
In a magnetic disk drive a pecial device called?
In a magnetic disk drive, a special device called a read/write head is used to read data from and write data to the magnetic disk. The head floats just above the surface of the spinning disk, allowing it to access the magnetic fields that represent stored data. As the disk rotates, the head moves across the surface to locate the appropriate data tracks, enabling fast access to information.
What is the average access time for a diskette drive?
The average access time for a diskette drive typically ranges from 100 to 300 milliseconds. This time includes both the seek time (the time taken for the read/write head to position itself over the correct track) and the latency (the time waiting for the desired sector to rotate under the head). However, specific access times can vary based on the drive's design and the speed of the media. Overall, diskette drives are significantly slower compared to modern storage devices like SSDs and HDDs.
What is purpose of angular velocity?
In http://www.answers.com/topic/optical-storage, constant angular velocity (CAV) is a qualifier for the rated speed of an http://www.answers.com/topic/optical-disc-drive, and may also be applied to the writing speed of recordable http://www.answers.com/topic/optical-disc. A drive or disc operating in CAV mode maintains a constant http://www.answers.com/topic/angular-velocity, contrasted with a http://www.answers.com/topic/clv (CLV). When playing back music, a http://www.answers.com/topic/compact-disc (CD) employs CLV to maintain a constant data rate. The motor speed decreases from 495 to 212 rpm as the read head moves away from the center to keep the disc moving past the read head at a constant linear velocity. High speed CD and DVD drives use CAV. CAV was used in the LaserDisc format for interactive titles, as well as special editions of certain films. CAV allowed for perfect still frames, as well as random access to any given frame on a disc. Playing time, however, was cut in half from 60 minutes to 30 minutes. CAV is used with Nintendo GameCube Game Disc and Wii Optical
What is a pan head?
A screw with a low disc and a chamfered outer edge. See related link for a pictorial. Pan head is A
Is there a Costco store in Hilton head SC?
No, there is no Costco store in Hilton Head, SC. The nearest Costco locations are in Savannah, Georgia, and Bluffton, South Carolina, which are about a 30-40 minute drive from Hilton Head. Residents and visitors can access these locations for Costco products and services.
What is a cylinder on a disk drive?
A cylinder on a disk drive refers to a set of tracks located at the same position on multiple platters within the drive. When data is written or read, the read/write head moves to a specific cylinder to access the desired information across all platters simultaneously, which enhances data retrieval efficiency. Essentially, a cylinder represents a vertical stack of tracks aligned across the platters, allowing for quicker data access without the need to move the head laterally.
