20 terms

Computer Data Storage Terms

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bit
the basic unit of information used in computing and digital communications, it can only have a value of 0 or 1
byte
the smallest addressable unit in computing that usually consists of 8 bits, enough to display any character in the executable language
character
a unit of information that roughly corresponds to a letter or symbol in an alphabet or syllabary in the written form of a natural language
Boolean
a data type having two values, usually denoted true and false
kilobyte
a unit of digital storage measuring 1,024 bytes.
megabyte
a unit of digital storage measuring one million bytes
gigabyte
a unit of digital storage measuring one billion bytes
terabyte
a unit of digital storage measuring one trillion bytes
solid-state storage
a type of non-volatile computer storage that stores and retrieves digital information using only electronic circuits, without any involvement of moving mechanical parts.
magnetic storage
a type of non-volatile data storge using different patterns of magnetisation in a magnetisable material. The information is accessed using one or more read/write heads.
flash memory
an electronic (solid-state) non-volatile computer storage medium that can be electrically erased and reprogrammed
Secure Digital Card
a non-volatile memory card format developed for use in portable devices
USB Flash Drive
a data storage device that includes flash memory with an integrated USB interface
Universal Serial Bus
a standardized cable that connects computer peripherals (including keyboards, pointing devices, digital cameras, printers, portable media players, disk drives and network adapters) to personal computers, both to communicate and to supply electric power
cloud storage
a model of data storage in which the digital data is stored in logical pools, the physical storage spans multiple servers (and often locations), and the physical environment is typically owned and managed by a hosting company
server
a computer or computer program that manages access to a centralized resource or service in a network
client
a piece of computer hardware or software that accesses a service made available by a server
optical
a flat, usually circular disc which encodes binary data in the form of pits on a special material on one of its flat surfaces
ROM cartridge
a removable enclosure containing ROM designed to be connected to a consumer electronics device such as a home computer, video game console and to a lesser extent, electronic musical instruments
external hard drive
a type of mass storage that can be plugged into different computers, usually via a USB connection
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