Flashcards
Digital data key words
Cards in this deck (16)
- 1DataRaw facts and figures that have not been processed and therefore not given a meaning or context.
E.g. 432 is just a series of digits. - 2informationIs data that has been processed and therefore given a meaning and a context
E.g. 432 is a patients id number - 3Bit Nibble Byte Kilobyte Megabyte Gigabyte Terabyte-A binary digit is either 1 or a 0 and is the smallest unit of storage
-4 bits or half a byte
-8 bits
-1024 Bytes
-1024 Kilobytes
-1024 Megabytes
-1024 Terabytes - 4What is ASCIIA character set used to represent letters, digits or punctuation marks in binary format.
- 5Bitmap graphiccan be formed as a number of pixels. The more pixels the better the resolution of the image is.
- 6Vector-based graphicsformed using mathematical objects such as lines and curves.
- 7Video streamingWhen videos can be viewed straight as opposed to downloading it before viewing
- 8BufferingIs an allocated part of the memory that is used to store a downloaded part of the video before it is watched
- 9Sample ratethis is the number of audio sound samples captured every second to represent the sounds digitally and is measured is hertz(Hz). The more samples that are taken per second the more accurate the digital representation of the original sound(results in higher quality sound)
- 10Bit depthBit depth is the number of bits used to store each sound sample. Higher quality sound requires a higher bit depth.
- 11Bit rateBit rate refers to the quantity of data measured in bits that is processed in a given amount of time. Usually in kilobits per second
- 12Analogue to digital conversionAn analogue signal is described as a continuous varying signal that represents a physical quantity such as sound.
Before a computer can process analogue signals they need to be converted to a digital format (binary). - 13Data Portabilityis the ability to transfer data from one computer to another or from one software application to another without having to re-enter data
- 14JPEG TIFF PNG GIF TXT CSV RTF MIDI MPEG AVI PDF WAV WMAJoint photographic expert group
Tagged image file format
Portable network graphics
Graphics interchange format
Plain text
Comma-separated value
Rich text format
Musical instrument Digital interface
Moving picture experts group
Audio video interleaved
Portable document format
Windows audio waveform
Windows media audio - 15Data compressionused to convert digital data to as small a size as possible while still maintaining the quality of the file
- 16Lossy compressionreduces the file size by removing some of the data e.g. reducing the number of colours used in an image.
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- GCSE Computing (Digital Data) Flashcards on Digital data key words , created by Abbie Welch on 07/11/2018.
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- Abbie Welch
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