Programming Languages

Programming Languages

1. Machine Code

   • Binary Notation - 0s and 1s
   • Specific to the architecture, which depends on the hardware design of the processor.
   • Instructions operate on bytes of data.

2. Object Orientated Language

   • To address the problem of code re-use, OOP was developed. It involves objects ( with properties ) and methods ( interactions).
   • The objects can only be accessed via the methods associated with it ( Encapsulation ) - More secure.

3. Levels

   • Binary = Machine Code. Low Level = Assembly Language. High Level = Procedural. High Level+ = OO Programming

4. Assembly Language

   • Involves Mnemonics (Abbreviations)
   • Labels for memory locations/variables.
   • Machine specific/ orientated. Also called Low Level Languages.
   • 1-1 Correspondence with Machine Code, Used for manipulating the hardware of the computer.

5. Procedural Language

   • Program states what to do and how to do it.
   • Program statements are in easy to read blocks, each block is a procedure or function.
   • Logic of program is given as a series of procedure calls, It uses programming constructs such as Sequence, Selection & Iteration.