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Assembly language
A language closely related to the computer being programmed / low level language / machine specific.
uses descriptive names (for data stores)
uses mnemonics (for instructions)
uses labels to allow selection
each instruction is generally translated into one machine code instruction
may use macros
Process of Assembler producing Machine Code
Reserves storage for instructions and data
Replaces mnemonic opcodes with machine codes
replaces symbolic addresses with numeric addresses.
creates symbol table to match labels to addresses
checks syntax / offers diagnostics for errors
Interpreter vs Compiler
INterpreter translates one line at a time, then allows it to be run before translation of next line, reports one error at a time then stops
Compilers translate the program as a single unit, provides error diagnostics at the end.
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