CD-ROM (1 Viewer)

[penaddictT-T]

pretty sure it won't come up since it's ancient and hasn't ever come up from 2009-2023 but im just getting ready for worst case scenario

what is cd-rom? i don't think it even comes up in sam davis txtbook...

 

[DarknessItself]

Compact Disk - Read Only Memory
Literally just CDs almost the same as DVDs.
They are an old storage medium that can only be read and not modified by a computer.
They are read by CD-ROM drives that use optical sensors to read the disc.

 

[penaddictT-T]

thank you!

 

[Demons]

thank you!

are you accelerating IPT in year 10? cause I just saw that you are completing HSC in 2026?

 

[wizzkids]

CD-ROM as others have said, is a read-only technology. Disc diameter is 120 mm and 1.2 mm thick. The standard data capacity is 680 Megabytes. Data is encoded as a spiral track containing a series of pits on a thin layer of aluminium, sandwiched between two very flat layers of plastic. Data is read back by shining a focussed laser beam onto the tracks and detecting the reflected intensity. Other variants are the CD-R disk which is a recordable disk, and the CD-R/W disk which is re-recordable, i.e. it can be erased. Samuel Davis devotes quite a few pages to discussion of optical disk technology in the Preliminary course.

 

[penaddictT-T]

are you accelerating IPT in year 10? cause I just saw that you are completing HSC in 2026?

yh

 

[penaddictT-T]

CD-ROM as others have said, is a read-only technology. Disc diameter is 120 mm and 1.2 mm thick. The standard data capacity is 680 Megabytes. Data is encoded as a spiral track containing a series of pits on a thin layer of aluminium, sandwiched between two very flat layers of plastic. Data is read back by shining a focussed laser beam onto the tracks and detecting the reflected intensity. Other variants are the CD-R disk which is a recordable disk, and the CD-R/W disk which is re-recordable, i.e. it can be erased. Samuel Davis devotes quite a few pages to discussion of optical disk technology in the Preliminary course.

ohh in the preliminary txtbook... i only have the hsc one hahaha

 

[kareem!]

CD-ROM as others have said, is a read-only technology. Disc diameter is 120 mm and 1.2 mm thick. The standard data capacity is 680 Megabytes. Data is encoded as a spiral track containing a series of pits on a thin layer of aluminium, sandwiched between two very flat layers of plastic. Data is read back by shining a focussed laser beam onto the tracks and detecting the reflected intensity. Other variants are the CD-R disk which is a recordable disk, and the CD-R/W disk which is re-recordable, i.e. it can be erased. Samuel Davis devotes quite a few pages to discussion of optical disk technology in the Preliminary course.

thankyou mr gpt