Using the landing computer

To land without computer 4 parameters must be correct:

1. Your nose must point in the right direction

2. Your ship must be horizontal.

3. Your ship must be located centrally over the landing area.

4. Your ship must be below a certain height.

Then your ship lands

With the landing computer MK1 only 2-3 (here I'm unsure what's right) parameters must be true.

With the landing computer MK2 only a single parameter has to be correct.

The rest is done by the software for you.