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language syntax[ edit ] assembly language uses a mnemonic to represent each low-level machine instruction or opcode , typically also each architectural register , flag , etc. many operations require one or more operands in order to form a complete instruction. most assemblers permit named constants, registers
this is much easier to read and to remember. mov al, h ; load al with decimal ( hex) in some assembly languages (including this one) the same mnemonic, such as mov, may be used for a family of related instructions for loading, copying and moving data, whether these are immediate values, values in registers...
https://en.wikipedia.org/wiki/Assembly_language