Creating Software

Creating Software

1. High Level Languages

   • Advantages
     • Code is easy to read,understand and modify.
     • The programmer can easily store data in lots of different structures without knowing about the memory structure
   • Disadvantages
     • You dont have miuch control over what the CPU actually does so programs will be less memory efficient and slower
     • Must be translated into machine code before a computer is able to understand it

2. Low Level Languages

   • Advantages
     • You control exactly what the CPU does and how it uses memory so programs will be more memory efficient and faster
     • Commands in machine code can be executed directly without need for a translator
   • Disadvantages
     • Code is very difficult to read,understand and modify
     • Usually written for one type of machine or processor and won't work on any others

3. Programming Languages

   • Compiler
     • Translates all of the source code at the same time and creates one executable file
     • Advantages
       • Returns a list of errors for the entire program once compiling is complete
     • Disadvantages
       • Compiling can take a long time
   • Interpreter
     • Translates and runs the source code one instruction at a time, but doesn't create an executable file
     • Advantages
       • The interpreter will return the first error it finds and then stop - this is useful for debugging
     • Disadvantages
       • Programs will run more slowly because the code is being translated as the program is running

4. IDE

   • 4 Main Features
     • Translators
     • Run time Environment
     • Editor
     • Error Diagnostics

5. Assembly Code

   • Forward. MOVF
   • Up. MOVU
   • Down. MOVF

6. Machine Code for directions

   • Forward. 100
   • Up. 110
   • Down. 111
   • Back. 101