Flashcards
1.2
Cards in this deck (31)
- 1AbstractionCreating simple concise representations of more complex phenomena so that people can more easily work with, communicate about, and learn about anything
- 2AnalogA continuous method of representing information
- 3Analog-to-Digital ConversionA process of converting continuous information into discrete data; some information is typically lost
- 4ASCIIA standard code for representing text characters using one byte. Generally replaced by UTF-8 or UTF-16 to support international languages
- 5Base nA base number system has n digits and uses place values that are powers of n
- 6BinaryThe binary number system is base 2, using only bits 0 and 1
- 7BitA single unit of binary consisting of only one place whose value can be 0 or 1
- 8ByteEight bits, able to represent 256 distinct values. Abbreviated "b"
- 9CompressionStoring information using fewer bytes
- 10Compression RatioSummarizes the reduction in size of a file. Can be expressed two different ways, as follows. If more than 1, the compression ratio tells how many times bigger the original file is. If less than 1, the compression ratio tells the percentage by which the original file size has been reduced.
- 11ConcatenationAttaching two things side-by-side, frequently strings of text.
- 12ContinuousVarying smoothly from one value to another. Opposite of discrete.
- 13Data AbstractionRepresenting or storing information with methods that separate layers of concerns so that the programmer can work with information while ignoring lower-level details about how the information is represented.
- 14DigitA single number (0-9) used to represent numeric quantities in base 10.
- 15DigitalData which can only take on discrete values. Opposite of analog.
- 16DiscreteJumping from one value to another without taking on all intermediate values. Opposite of continuous.
- 17Event HandlerA chunk of code that responds to actions performed by users or by other parts of the program.
- 18FidelityThe extent to which a copy is identical to the original.
- 19Global VariableA variable that can be used in any part of the program.
- 20HexadecimalThe hexadecimal number system is base 16, using only digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, and F.
- 21KilobyteOne thousand bytes (abbreviated “kb”). Sometimes used to mean 210 bytes = 1024 bytes (abbreviated “kib”).
- 22MegabyteOne million bytes (“Mb”). Sometimes used to mean 220 bytes = 1,048,576 bytes (abbreviated “Mib”).
- 23LossyDescribes a method of compression in which data is lost in a way that cannot be recovered from the compressed data.
- 24OctalThe octal number system is base 8, using only digits 0 through 7.
- 25PaletteA limited set of colors.
- 26PaddingBlank space placed around elements of a display to make it look the way the designer planned.
- 27PixelA single dot in an image. Many color monitors actually have three dots (red, blue, and green) for each pixel, but it is referred to as one pixel.
- 28Procedure DefinitionIdentify a chunk of code that will be reusable anywhere else in the program by calling its name
- 29PseudorandomNumbers that are difficult to predict and created by a computer.
- 30TypeA specific meaning for data, such as a character, a truth value, or an integer, usually limiting the values allowed for the data.
- 31UTF-8A coding system for storing characters in bits, extending the 8-bit ASCII coding system to include international characters by sometimes using more than 8 bits.
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- Flashcards on 1.2, created by mactastiic on 14/04/2015.
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