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Begrepp

Hexadecimala talsystemet

När man räknar som vanligt använder man bas tio, som har de tio siffrorna 0–9. Det hexadecimala talsystemet använder bas sexton, vilket innebär att det krävs sexton siffror. Då behövs alltså sex nya, och dessa brukar betecknas A–F. Platsvärdena i ett tal i bas sexton anger sextonpotenser. Tabellen visar en jämförelse av hur man räknar upp från 1 i de två systemen.
Bas tio
Bas sexton A B C D E F

Talet 16 skrivs i bas sexton som

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