Karteikarten
Data representation
Karten in diesem Stapel (33)
- 1What is the Base-2 number system known as?Binary
- 2What digits can be used in the binary number system?0s and 1s
- 3What is the binary value 00000011 in denary?3
- 4What is the binary value 00000000 in denary?0
- 5What is the Base-10 number system known as?Denary
- 6How many bits are there in a byte?8
- 7How many bytes are there in a kilobyte?1024
- 8How many bits are there in a nibble?4
- 9What name is given to the unit of data larger than a kilobyte?Megabyte
- 10What does 1024 gigabytes equal?1 terabyte
- 11What is the binary value 01101011 in denary?107
- 12What are these added in binary? 10101011 + 110011010101111000
- 13What is the denary value 100 in binary?01100100
- 14What is the result of this in denary? 10010101 - 0100101174
- 15What is the Base-16 number system known as?Hexadecimal
- 16What does 'overflow' mean?When a number is too large to fit into the allocated number of bits. Some bits are lost, leaving an incorrect value.
- 17What is the denary value 10 in hexadecimal?A
- 18What is the hexadecimal value E in denary?14
- 19What is the binary value 1110 in hexadecimal?E
- 20What is the hexadecimal value 3D in binary?00111101
- 21What is a character set?The characters available to a computer too use
- 22How many bits does ASCII use for each character?7
- 23What does ASCII stand for?American Standard Code for Information Interchange
- 24How many character possibilities does Unicode allow for?More than 4 billion possibilities
- 25What is colour depth/bit depth?The number of bits used for each pixel. More bits mean more colours can be represented.
- 26What is resolution?The number of pixels per unit, eg. ppi (pixels per inch)
- 27What is metadata?Information about the image data which allows the computer to recreate the image from binary data in the file. It must comtain height and width (in pixels) and the colour depth in bpp (bits per pixel)
- 28What is the term for sound that continuously varies?Analogue
- 29How is analogue sound converted into digital sound?The sound wave is sampled at set intervals and the values are recorded.
- 30What is meant by 'sample rate'?The number of times the sound is sampled per second.
- 31What is sample rate measured in?Hz (Hertz), eg. 50Hz = 50 samples taken per second
- 32What is meant by 'bit rate'?The space available for each second, measured in kilobits per second (kbits/s).
For example, 128kbits/s is 128 kilobits per second of sampled sound. - 33What two parts is an instruction decoded into?Operator and operand
Informationen
- Beschreibung
- Flashcards for OCR Computing, section 4 (representation of data in computer systems)
- Erstellt von
- Tom Mellor
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- Erstellt von lilymate · 11 Okt 2014
- Kopiert von Tom Mellor · 16 Nov 2016
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