INPUTOUTPUT AND STORAGE DEVICES
STORAGE DEVICES HARD DISK SSD AND FLASH MEMORY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Because it uses blue lasers which have shorter wavelengths.
|
|
|
to make the copy of original data to in case you lose your original data.
|
|
|
it is a disk with bumps can be read by laser
|
|
|
allowed you to store a lot of data, very fast transfer data
|
Detailed explanation-1: -BluRay Disk (BD) is an optical storage media used to store high definition (HD) video and other multimedia filed. BD uses shorter wavelength laser as compared to CD/DVD. This enables writing arm to focus more tightly on the disk and hence pack in more data. BDs can store up to 128 GB data.
Detailed explanation-2: -Unlike DVD technology, which uses red lasers to etch data onto the disc, the Blu-ray disc technology uses a blue-violet laser to record information. The blue-violet laser has a shorter wavelength than the red lasers do, and with its Smaller area of focus, it can etch more data into the.
Detailed explanation-3: -Blu-ray discs can hold more information than other optical media, because of the blue lasers that the disc drives use. A single Blu-ray disc can hold up to 25GB of data. Dual-layer Blu-ray discs will be able to store 50GB of data-equivalent to four hours of HD content.