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05  Memories and Storage Devices

Vocabulary

Definition Translation
access time
the time taken to fetch a piece of data
back up to copy files from one disk to another zálohovat
backing storage A type of computer memory used to store data even with the power turned off záložní paměť
backward-compatible
Compatible with earlier models or versions of the same product kompatibilní, slučitelný s předchozí verzí
Blu-ray disc a new optical disc using a blue-violet laser to read and write data Blu-ray disk
data transfer rate the average speed at which data can be transmitted from one device to another, MB per second přenosový výkon
directory a list of files on a disk adresář
DVD burner a DVD drive that records information by burning via a laser to a blank DVD disc vypalovačka DVD
flash card reader a device that reads and records flash memory cards čtečka paměťových karet
flash memory card a card that contains a number of non-volatile memory chips to hold the data paměťová karta
floppy disk a disk made of flexible plastic material on which data is stored on magnetic tracks disketa
format to prepare a disk for use, the operating system marks tracks and sectors on its surface
formátovat
fragmentation the condition of a disk in which files are divided into pieces scattered around the disk fragmentace
hard drive a magnetic storage device that that reads and writes data on metal disks inside a sealed case pevný disk
hybrid hard drive a hard disk with integrated flash memory hybridní disk
laser beam a beam of monochromatic coherent light laserový paprsek
main memory the hardware section that holds the instructions and data currently being processed hlavní/operační paměť
non-volatile memory permanent memory able to hold data without power. ROM and flash memory energeticky nezávislá paměť
optical drive a storage device in which data is recorded by a laser beam optický disk
pen drive a flash drive USB disk
platter
a magnetic plate, a part of a hard disk drive jednotlivý pevný disk
portable hard drive an external hard drive connected to the computer via USB externí pevný disk
RAM the part of the main memory which stores information temporarily while you are working paměť RAM
read/write head the part of a disk drive that reads and writes data on a magnetic disk čtecí a zápisová hlava
retrieve find from the memory vyhledat
ROM the part of the main memory where essential system instructions (BIOS) are permanently stored. paměť ROM, jen na čtení
sector a part of a track on a magnetic disk sektor
spin revolve quickly around the axis rotovat
track an area marked on a surface of a disk, used to organize information on a disk stopa
USB flash drive a USB storage device used to store and transport data USB disk
volatile memory temporary memory that doesn´t hold information without power energeticky závislá paměť


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