Input & Output
13 years ago
Disk Caching
A portion of RAM used to speed up access to data on a disk. The RAM can be part of the disk drive itself or it can be general-purpose RAM in the computer that is reserved for use by the disk drive. Hard disk caches are more effective, but they are also much more expensive, and therefore smaller.
File compression is commonly used when sending a file from one computer to another over a connection that has limited bandwidth. The compression basically makes the file smaller and, therefore, the sending of the file is faster. Of course, when compressing a file and sending it to another computer that computer has to have a program that will decompress the file so it can be returned to "normal" and used.
File decompression
Many of the files on the Engineering Service Center FTP (file server) site are "compressed." To facilitate decompressing these files, we have made many decompression programs available. Every effort is made to ensure that all compression programs have a decompression program available here for Macintosh, Windows, DOS and UNIX based workstations. Please read the file descriptions below and FTP (download) the appropriate file(s).
Internet hard drive
The sole purpose of an Internet hard drive is to offer a means of accessing your computer files (pictures, documents, music, videos, etc.) from any computer, as long as that computer has access to the internet. Similar to depositing money into your bank account, and later withdrawing that same money from any ATM machine, an Internet hard drive will allow you to "deposit" your computer files into a remote hard drive, and then later access those very same files from any other computer.
Optical disc drive
In computing, an optical disc drive (ODD) is a disk drive that uses laser light or electromagnetic waves near the light spectrum as part of the process of reading or writing data to or from optical discs. Some drives can only read from discs, but recent drives are commonly both readers and recorders. Recorders are sometimes called burners or writers. Compact discs, DVDs, and Blu-ray discs are common types of optical media which can be read and recorded by such drives.
Solid state storage
Abbreviated SSD, a solid state disk is a high-performance play storage that contains no moving parts. SSD components include either DRAM or EEPROM memory boards, a memory bus board, a CPU, and a battery card.
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