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Bits en bytes

Bits en bytes. Bit. Transistor laat stroom door of niet Hoge spanning of lage spanning 1 of 0 Tweetallig, binair Tientallig, decimaal Digit = getal Binary digit = binair getal Binaire digit = bit. Binair Decimaal 0 0 1 1 10 2 11 3 100 4 101 5 110 6 111 7. Decimaal 8

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Bits en bytes

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  1. Bits en bytes

  2. Bit • Transistor laat stroom door of niet • Hoge spanning of lage spanning • 1 of 0 • Tweetallig, binair • Tientallig, decimaal • Digit = getal • Binary digit = binair getal • Binaire digit = bit

  3. Binair Decimaal 0 0 1 1 10 2 11 3 100 4 101 5 110 6 111 7 Decimaal 8 Binair 1000 Decimaal 9 Binair 1001 Decimaal 10 Binair 1010 Binaire getallen

  4. Binair rekenen • 2 + 3 = 5 • 10 • + 11 • = 101

  5. 1 bit 2 bits 3 bits 8 bits = 1 byte (meestal) Definitie 2 combinaties (0 en 1) 2x2= 4 combinaties 00, 10, 10 en 11 2x2x2= 8 combinaties 2x2x2x2x2x2x2x2= 256 combinaties 2 tot de macht 8 Een byte is het kleinste wat naar een computer kan geschreven worden. Byte

  6. 2 bytes 1 kB 1 KiB = 1 kibibyte Staat vaak fout op internet 2 x 256 combinaties 10011101 10100001 1000 bytes = 2 tot de macht 10 bytes = 1024 bytes Voor 1998 was het anders. 1 kB = 1 kilobyte =1000 bytes

  7. Overzicht • 1 kB = 1 kiloByte • = 1000 bytes • 1 MB = 1 megaByte = 1000000 bytes • 1 GB = 1 gigaByte =1000000000 B • 1 KiB = 1 kibibyte = 210 = 1024 bytes • 1 MiB = 1 mebibyte = 220 B • 1 GiB = 1 gibibyte = 230 B

  8. Downloadsnelheden • M = mega = • b = bit • Mbps = megabit per seconde • 8 Mbps = • Van Bits naar bytes. • miljoen • B = byte • MB/s = megabyte per seconde • 1 MB/s • Delen door 8.

  9. 32 bits en 64 bits computers • 232 geheugen adressen • Maximaal 4 GB • Door de databus kunnen 32 bits tegelijk verstuurd worden. • 264 geheugen adressen • 1,8 x 1010 GB theor 128 GB Win7 • Door de databus kunnen 64 bits tegelijk verstuurd worden.

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