This document outlines the key components of software development from the initial "Hello World" program through compilation and interpretation into machine code, followed by the operating system which includes the basic input/output system and interrupt register to run programs.

1. The software story
Writeln(‘Hello World’);
The Parser

2. The software story
Writeln(‘Hello World’);
The Parser
The Library

3. The software story
Writeln(‘Hello World’);
The Parser
The Library
The Compiler
The Interpreter

4. The software story
Writeln(‘Hello World’);
The Parser
The Library
The Compiler
The Interpreter
Machine Code

6. Assembler

7. The software story
Writeln(‘Hello World’);
The Parser
The Library
The Compiler
The Interpreter
Machine Code
The Operating System
Interrupt Register

8. Getting attention
PC Interrupt guide

9. The software story
Writeln(‘Hello World’);
The Parser
The Library
The Compiler
The Interpreter
Machine Code
The Operating System
Basic Input Output System (BIOS)
Interrupt Register