Creating synth rhythm lines questions.

[seaside3333]

I am interested in creating an early 80s electro track. I have a question about the synth rhythm lines in a lot of these tracks, I also hear them or some form of them in other types of music too. They seem really simple and have a strong 16th note feel to them and kind of act as more of a pitched percussive repeated part than say a lead or melodic part of the song. They usually are more of a backing element in a track to push/drive it along.

I posted two examples below where you can really hear them.
First Example:

In this first example I think it is a 1 bar repeated pattern basically played through the whole track driving it along. If you start at the 45 second mark of the video you can really hear it.

Second Example:

In this second example there is a two different versions of it, one version seems like they just have some more delay or fx on it and the second version is in the verses when she sing and some other parts that there is no fx or not as many on it. This one with less fx is the one I am interested in. It starts around the 1:04 part in the vid, it is a little tough to hear, but it is there. You can hear it a little better after she pauses from singing around the 1:24 to 1:30 part. At the 1:30 part it stops.

I bet most of you have heard this type of little synth rhythm lines before in numerous tracks.
Basically I just wanted to know if someone can break these examples down for me? Or give me any tips on creating something like this? It seems pretty simple, but I having a bit of a problem creating something here. Any help, tips, or anything will help.

Thanks.

[thecontrolcentre]

They sound like arpeggiator patterns.

[Hink]

it was suggested to me that this might do better in production techniques so I'm gonna move it there but leave a shadow topic here.