High and low level programing.

High and low level programing.

1. Low Level

   • Asembly language
     • Assembly language is a low level language which closely reflects how opcodes and operands work.
       • It is much quicker quicker for computers to convert assembly instructions to machine code than to convert high_level source code to machine code
     • The assembly language opcodes include: add,subtract,load,compare,branch,store
     • Assembly language instructions are abbrevitation called menomics
       • Mnemonics are easier for humans to understand and remeber than binary machine code instructions.
   • Assembly : LOAD 0004
     • Mnenomics:LDA 0004
       • Binary:1010 0100
         • Hex:A4
   • Machine code
     • Writen in binary designed to be understood by the computer system.
     • Specific each machine not portable

2. Compiler

   • The compiler stores the fully developed and tested source code and converts it into machine code into exacutible

3. Interpreter

   • Translate the source code one row at a time
   • It can only be used in intepreter software

4. High level

   • Instructions are writen in words
   • Designed to be easy understood by humans
   • Has syntacx rules
   • Ide
     • Python
       • C++
         • Java
           • scratch
   • Portable and can be used in diffrent machines

5. Opcode

   • tells the instructions the program needs to do

6. Operand

   • Specifies the data that needs to be acted the operand can also refer to places in memory.

7. Editor

   • Allows the source code to be edited .

8. Debugger

   • Identifies the errors and sometimes notifies the user

9. Translator

   • Translate the data to allow th machines to understand.