2.5 Translators, Compilers & Interpreters

Translates low level assembly language mnemonic into machine code

• Assembler

• Compiler

• Interpreter

Translates source code from high level languages into object code and then into machine code

• Assembler

• Compiler

• Interpreter

Program is translated line by line as the program is running

• Assembler

• Compiler

• Interpreter

What is a MNEMONIC?

• A single action that can be performed by a computer.

• A symbol that represents an instruction in assembly code.

• A high level language keyword.

• A register used inside a CPU A register used inside a CPU.

Which of the following is NOT a translator?

• Assembler

• Compiler

• Interpreter

• Executable

It is a computer program that links and merges various object files together in order to make an executable file.

• Assembler

• Compiler

• Linker

• Loader

This phase scans the source code as a stream of characters and converts it into meaningful lexemes.

• Lexical Analyzer

• Syntax Analyzer

• Semantic Analyzer

• Code Generator

Stage of compilation that removes redundant code and replaces inefficient code.

• Lexical Analysis

• Syntax Analysis

• Semantic Analysis

• Code Generation

• Code Optimisation

Stage of compilation that checks a sequence of tokens is valid.

• Lexical Analysis

• Syntax Analysis

• Semantic Analysis

• Code Generation

• Code Optimisation

A membership ID is defined using BNF. According to the rules expressed in the diagram, which one of the following user ID's would be valid?

• #AAEF52

• &EEE8

• #7233

• CE67