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10553786
Data Spider diagram
Descrição
bip
Sem etiquetas
bip
computing
year 10
Mapa Mental por
Luke Antrobus
, atualizado more than 1 year ago
Mais
Menos
Criado por
Luke Antrobus
aproximadamente 7 anos atrás
30
1
0
Resumo de Recurso
Data Spider diagram
Binary
Unsigned Integers
Numbers that aren't negative
Sign magnitude
Two's compliment
Swap them, add 1.
Binary Arithmetic
Arithmetic shift. Move to the left it doubles, to the right it halves.
Overflow is where it shifts to the left and data is lost and it can miscalculate
Hex (Not designed for computers, used for people to read big numbers easily)
Conversion
Goes from 0 to F because each digit of Hex is representing 1 nibble.
Characters (Any single character) Data on some programme languages, not Python.
ASCII
Unicode (Character sets)
Images (Made up of Pixels)
Bit Depth (Colour Depth)
Resolution (A x B)
Calculating File Size
(Res A x Res B x Bit Depth) / 8(Bytes) x 1024(KB)
Sound (Analogue)
Sampling frequency
Resolution
Bits per sample or bit depth
Frequency x Bit Depth x Channels x Length = File Size
Data Units
Data capacity, Bit, Nibble, Byte, Kilobyte, Megabyte, Gigabyte, Terabyte
Compression
Lossy
Lossy compression is when you compress a file but lose detail
Lossless is the same as lossy but you don't lose quality
Anexos de mídia
Small (binary/octet-stream)
Hex To Binary 001 (binary/octet-stream)
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