I work in embedded software, but I've always been a bit weak on the hardware side of things (I know quite a bit about hardware, but I always had to drag out an electrical engineer for problems they deemed trivial). I took the MITx Electronics and Circuits class, and so far it seems that I haven't found an employer who cares one bit. I hadn't put it on the resume/CV, but I have mentioned it in cover letters and such for employers that it seemed relevant.
I wouldn't let this point of pessimism stop you (it's not stopping me, I'm taking Machine Learning now). As others have indicated, this will probably let you pass job interviews others can't. But in my experience with regard to the job application process, it will likely be something they ignore, and I would try to get them to talk to you about it in another fashion (bring it up in the interview, cover letters, etc).
Note that this is from an US perspective, I know the ideals behind a CV and a resume are quite different so you may want local advice. However, if I were making a CV for an academic position in the US, I'd probably still leave it off.
I wouldn't let this point of pessimism stop you (it's not stopping me, I'm taking Machine Learning now). As others have indicated, this will probably let you pass job interviews others can't. But in my experience with regard to the job application process, it will likely be something they ignore, and I would try to get them to talk to you about it in another fashion (bring it up in the interview, cover letters, etc).
Note that this is from an US perspective, I know the ideals behind a CV and a resume are quite different so you may want local advice. However, if I were making a CV for an academic position in the US, I'd probably still leave it off.