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16y ago

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What do CD's use to store data on the disks surface?

Pits and lands


Which side of the CD contains the data?

although many people think it is the bottom or "shiny" side, it's actually only a plastic holder the data is kept on the side that the title and/or graphics has been printed. it's true, i found out the hard way!


How are the pits and flats arranged on a CD?

The pits and flats are arranged in a spiral pattern on the CD. These pits and flats are found on the bottom edge of the CD and are the grooves that include data.


How does a CD player read a CD?

The CD disc is a 'sandwich' of a thin layer of metal and plastic. (The metal is the 'meat' - the plastic is the 'bread'. The metal layer has music recorded on it by a laser - which creates microscopic 'pits' in the surface. The CD player has a (less powerful) laser - which reads the pits - and converts the data into music.


How do a CD drive interface with a PC?

A CD has microscopic pits and ridges that a CD drive can read. In order to read these pits, the drive has a laser that fires at the bottom of the CD and detects those pits and ridges. It then sends that raw data to the computers proccesser or motherboard, which decodes the data into a form the computer can use.


Are CD-RWs as stable as CDs?

No, because in a CD-RW the pits and flats that make up the data are constantly being changed, which means the disc's surface has to be much more flexible and impermanent.


What stores items by using microscopic pits and lands in its middle layer and is read by a laser beam?

A compact disc (CD) stores data by using microscopic pits and lands in its middle layer called the polycarbonate layer. These pits and lands are read by a laser beam in order to retrieve the stored information.


What are the flat spots on a CD called?

The flat spots on a CD are called pits and lands. These pits and lands are etched onto the surface of the CD to store digital information in the form of binary code.


What is the raised area or bump on the surface of a CD?

The raised area or bump on the surface of a CD is known as a "pits" and "lands" structure. These microscopic indentations (pits) and flat areas (lands) encode the digital information of the disc. When a CD player reads the disc, a laser scans these variations in height, translating them into audio or data signals. This encoding method is fundamental to how CDs store and retrieve information.


Polycarbonate discs coated with a reflective metal on which data is recorded using laser technology as a trail of tiny pits or dark spots in the surface of the disc are?

Compact discs (CDs) are made of polycarbonate material and have a reflective metal layer where data is stored as tiny pits or dark spots created by a laser. When the CD is read by a laser in a CD player, the pits reflect light differently, allowing the player to interpret the data encoded on the disc.


Why is a DVD able to store 4.3GB of data even though it is the size of a normal CD?

Single layer recordable DVD's can store 4.3GB of data. Data is stored on CD's and DVD's via reflective and non reflective pits on the surface of the media. These "dots" are much smaller on DVD's which gives you more room to store information on the surface of the disc. Dual Layer DVDs hold 8.5GB. The pits on a DVD are much smaller and closer together than those on a CD. The new BlueRay disks can pack the pits even closer together because the blue light used to read them has a smaller wavelength and hence is able to resolve smaller details on a disks surface. CDs are read by a red or infrared light which has a much longer wavelength and is not able to resolve smaller pits on a disks surface.


What side of a CD is read?

CD are made of two parts plastic and polycarbonate (the shiny part) the bottom side is just plastic and the top side is where all the data it. The CD drive uses a laser that reads the polycarbonate through the plastic. So you look at the top part of the CD and its missing some of the polycarbonate your definitely going to get skips.