High Level and Low Level

High Level and Low Level

1. High Level

   • Integrated Development Enviroment
   • Editor
     • Colours Key words
     • Auto completion of programming terms
   • Debugger
     • Error Messages
     • Correction Suggestions

2. Middle Stages

   • Translator
     • Converts high level code into low level code.
       • Examples include Compilers & Interpreters
   • Compiler
     • Turns all of the code into low level code that can be executed by the processor with out an interpreter. Produces a ".EXE" file. Used for shipping a product.
   • Interpreter
     • Converts code into low level code line by line as a non-permanent solution. Can only be ran with an interpreter. This will only run fully if the source code is error free.
     • Stops after it encounters a syntax error

3. Low Level

   • Assembler
     • An assembler converts assembly code into machine code for example ADD AX, BX becomes 0001 1101 1011.
   • Mnemonic
     • Is a shortened version of an Opcode like LDA for Load or SUB for Subtract.
   • Opcode
     • Is an instruction given to a CPU like "add" or "subtract".
   • Operand
     • Is a number given to an Opcode which represents something like a register directory or data.
   • Machine Code
     • Machine code are computer instructions stored as bits in binary.
   • Assembly Code