Operand
U matematici, operand je jedan od ulaza (argumenata) operatora. Za primjer, u
- 3 + 6 = 9
'+' je operator a '3' i '6' su operandi.
Broj operanada operatora se zove njegova mjesnost (aritet). Ovisno o mjesnosti, operatori se mogu klasificirati kao unarni, binarni, ternarni itd.
U računalnim programskim jezicima, definicija operatora i operanda je gotovo ista kao i u matematici.
Dodatno, u asemblerskom jeziku, operand je vrijednost (argument) nad kojim djeluje instrukcija, imenovana mnemonikom. Operand može biti registar procesora, memorijska adresa, literalna konstanta ili labela. Jednostavan primjer (u PC arhitekturi) jest
- MOV EBX, EAX
pri čemu se vrijednost u registarskom operandu 'EAX' pomiče u registar 'EBX'. Ovisno o instrukciji, može biti nula, jedan, dva ili više operanada.
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