Daddy, What’s that funny thing on your desk?

As folks have noticed by now, I’ve been having fun playing with icons. I was working up the icon on this post, having scanned one of my 80-column cards from the UCLA Computer Club (I went up to my box of cards, and grabbed a green, white, orange, and brown… I think I still have blue and a whole batch of other varieties up there). The card was lying on my desk. My 9yo daughter comes up to my desk and says, “Daddy, what’s that? What does MU$ mean?”

Sigh.

[Extra Question: The cards from the UCLA Computer Club had the following symbols on them: a log, fan-fold paper, a moose, the  words “MU$”, and a reel of tape. Can you identify what each of these things symbolize, and for the paper and tape, the number of columns or tracks that it had?]

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