A certificate of deposit, more commonly known as a CD, is a special type of savings account. You deposit your money into the account and agree not to make any withdrawals for a certain period of time. At the end of that time, you get your money plus whatever was earned in interest back.
- 1 How is data stored on a CD?
- 2 What is CD and its working?
- 3 How does a read/write CD work?
- 4 What are the different types of CD?
- 5 What is the difference between CD and CD-ROM?
- 6 How do I burn a CD?
- 7 Whats CD stand for?
- 8 How many times can you write to a CD?
- 9 How many times can you burn a CD?
- 10 Can CD-rom be written once?
- 11 Can you lose money with CDs?
- 12 What replaced CDs?
- 13 What is a real life example of a CD investment?
How is data stored on a CD?
Data is stored on the disc as a series of microscopic indentations called “pits”, with the non-indented spaces between them called “lands”. A laser is shone onto the reflective surface of the disc to read the pattern of pits and lands.
What is CD and its working?
If you have read the HowStuffWorks article How CDs Work, you know that the basic idea behind data storage on a normal CD is simple. The surface of the CD contains one long spiral track of data. The drive converts the reflections into 1s and 0s to read digital data from the disc. See How CDs Work for more information.
How does a read/write CD work?
Heated to one temperature, the material cools to a transparent state; heated to another temperature, it cools to a cloudy state. By changing the power (and therefore the temperature) of the writing laser, the data on the CD can be changed, or “rewritten.” A CD-R can be read by just about any CD player.
What are the different types of CD?
Types of CD There are three main types: standard manufactured CDs (CD-DA), CD-R recordable and CD-RW rewriteable. Standard manufactured CDs can be played on any CD digital audio player. CD-Rs can be played on CD-R machines and many but not all CD digital audio players.
What is the difference between CD and CD-ROM?
A Compact Disc Read Only Memory (CD-ROM) is a read-only disc. These types of disks are created commercially and you cannot save data to them once they have been created. A Compact Disc Recordable (CD-R) is a Write Once Read Multiple (WORM) disc. After writing to a CD-R, it becomes a CD-ROM.
How do I burn a CD?
Burn an audio CD (or a data CD or DVD)
- Open Windows Media Player.
- In the Player Library, select the Burn tab, select the Burn options button.
- Insert a blank disc into your CD or DVD burner.
Whats CD stand for?
CDs are small plastic disks on which sound, especially music, is recorded. CD is an abbreviation for ‘ compact disc. ‘
How many times can you write to a CD?
Because of this high reflectivity, CD-R discs can be read or played back in most CD players and CD-ROM drives. Compact Disc Rewriteable (CD-RW) is a fully rewriteable media, meaning that any spot on a CD-RW disc can be rewritten up to 1,000 times (based on the current standard).
How many times can you burn a CD?
CD-RW and DVD-RW discs are primarily used when you want to burn data or music and at a later time erase the CD or DVD and burn updated or new files to it. CD-RW discs can be erased and burned as many as a thousand times, DVD-RW perhaps a hundred.
Can CD-rom be written once?
Unsourced material may be challenged and removed. CD-R (COMPACT DISC – Recordable) is a digital optical disc storage format. A CD-R disc is a compact disc that can be written once and read arbitrarily many times. This is an advantage over CD-RW, which can be re-written but cannot be played on many plain CD readers.
Can you lose money with CDs?
CD accounts held by consumers of average means are relatively low risk and do not lose value because CD accounts are insured by the FDIC up to $250,000. Typically, you can open a CD account with a minimum of $1,000. CD account terms can range from seven days to 10 years, depending on the amount of money deposited.
What replaced CDs?
Manufacturers have replaced the aging CD player with touch-screen media centers that offer streaming services, hands-free Bluetooth® and can play digital files from portable USB drives. Over the years, CD sections in stores have been shrinking as less and less people buy CDs.
What is a real life example of a CD investment?
It is like a savings account. For example, Joe invested $5,000 in CD with a bank at a fixed interest rate of 5% with 5 years maturity. Upon maturity, Joe’s initial investment of $5000 had reached $6,382. The return on CD for the period of 5 years was $1,382.