Examples

The simplest program :

with TEXT_IO;
          -----------
procedure HELLO_WORLD
is        -----------
begin
  TEXT_IO.PUT_LINE( "Hello_world !" );
end;

A simple ASCII JSON reader/writer program : JSON package

Micro-controller programming

Ada 83 is a very convenient tool for micro-controller programming. The famous Arduino boards equipped with AVR chips can be programmed in Ada 83. Some examples here.