Karteikarten
IGCSE Data Representation
Karten in diesem Stapel (40)
- 1AbstractionRepresentation that is arrived at by removing unnecessary details.
- 2Abnormal dataTest data that falls outside of what is acceptable and should be rejected.
- 3Actuatoroutput devices responsible for creating real world movement(including electric motors,pistons and pumps)
- 4Algorithma set of instructions/steps that are followed to solve a problem
- 5Arithmetic and logic unita part of the CPU where arithmetic and logic operations are carried out.
- 6Assembly languageA low level programming language used to relate to the specific architecture and hardware of a particular type of computer.
- 7data typean attribute that specifies the type of data that an object can hold
- 8data base managementsoftware designed for creating and managing databases
- 9hackingillegal access to a computer system without the owner’s consent or knowledge
- 10ASCIIa 7-bit character set consisting of 128 different letters, numbers or punctuation symbols
- 11Authenticationprocess of a user proving they are who they say they are, their identity
- 12Bytemeasurement of computer storage, with 1 byte being equal to 8 bits
- 13Cookiessmall text files,stored on a user’s computer to help websites remember preferences and track user behavior
- 14Encryptionconversion of data into a jumbled form (cipher text) which cannot be easily understood by anyone except those possessing a decryption key
- 15Pseudocodelines of instructions written in a language close to English but with common programming terms used where possible
- 16debugfinding and correcting errors
- 17iterateto repeat
- 18decompositionbreaking something into smaller parts
- 19pattern recognitionlooking for similarities and trends
- 20arithmetic and logic unit (ALU)A part of the computer that performs arithmetic operations, logic operations and related operations
- 21encryptionIn computer security, the process of transforming data into an unintelligible form in such a way that the original data cannot be easily obtained except by using a decryption process.
- 22JPEG (joint photographic expert group)A recognized standard of compression of graphics files that has some loss.
- 23UnicodeA standardized 16-bit character set that represents the character sets of most major languages in the world. See also the definition for "ASCII".
- 24InterruptA suspension of a process, such as the execution of a computer program caused by an external event, performed in such a way that the process can be resumed.
- 25RAMMemory in which each cell (usually a byte) can be directly accessed. Inherent in the idea of being able to access each location is the ability to change the contents of each location. That is, storing something else into that place can change the bit pattern in each cell
- 26ROMMemory which contents are permanent and cannot be altered by a second operation. Placing the bit pattern in it is called burning. The bit pattern is burnt either at the time the it is manufactured or at the time the computer parts are assembled.
- 27simplexData travels in one direction only
- 28half-duplexData can travel in both directions along a single cable, but not simultaneously
- 29duplexData can travel in both directions simultaneously using two cables
- 30bit rateThe speed of data is measured in bits per second
- 31BAUDrate at which the signal changes
- 32bandwidthThe amount of data that can be carried at one time
- 33protocolset of rules that device communicate
- 34routera hardware device that allows you to
connect several computers and other devices to a
single Internet connection, in a home network - 35Access pointallowing you to easily
create a wireless
network - 36TCP (Transmission Control Protocol)• Breaks up messages sent over the Internet into small chunks
called packets
• Reassembles the packets at the other end
• Detects errors
• Resends lost messages - 37IP protocolRoutes the individual packets between sender and recipient
- 38HTTP (hypertext transfer protocol)used for
accessing and receiving web pages in the form of
HTML files on the Internet - 39HTTPS (secure protocol)encrypts the information so
that it cannot be hacked - 40—
Informationen
- Beschreibung
- Karteikarten am IGCSE Data Representation, erstellt von Bosco Lam am 08/05/2019.
- Erstellt von
- Bosco Lam
- Aufrufe
- 2
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