De or het machinecode?

The correct Dutch article is:

de machinecode

Rule Words ending in -ode: always de. See the rule

How to use machinecode

the machinecodede machinecode
this machinecodedeze machinecode
that machinecodedie machinecode
our machinecodeonze machinecode
your machinecodejouw machinecode
every machinecodeelke machinecode
which machinecode?welke machinecode?
a big machinecode / the big machinecodeeen grote machinecode, de grote machinecode