The typing games on 10FastFingers.com offer you an easy way to improve your typing speed. A quick way to test your typing speed is our 1-minute typing game on this page. The words that are used in this game are the most common words for each language.
SecurActive Performance Vision. CD-R (for compact disc, recordable) is a type of write once, read many (WORM) compact disc (CD) format that allows one-time recording on a disc. The CD-R (as well as the CD-RW) format was introduced by Philips and Sony in their 1988 specification document, the Orange Book.
However, a blue ray reader can read or write on any of the types of discs and a DVD reader or writer can read or write on either CD or DVD. CDs, DVDs and BluRay discs all work in similar ways. The primary difference is the data density on each disc. CD is the lowest density. A DVD can store several times the amount of data on the same surface area and BluRay will store several time the amount of a DVD.