Live Statistics Check your typing speed and accuracy as it is updated and displayed every second while you type. Personalize and Save Report Report can be personalized with your name and your results can be saved and shared easily using the link generated at the end of every test.
CDR means compact disc-recordable. Like most compact discs, CDRs can only store somewhere between 700-800MB of data. The unique thing about them is that they can only be used for recording once. After that, it is a read-only disc. As such, whatever you will record on a CDR will remain unchanged forever.
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.