I think most are probably off topic...I do remember some early cadence devices and I had a "grade" guage meter at one time also that fitted on my stem that I know were on topic...about the closest to a computer...
My first cyclometer was a Rhode Gear from 87 or 88 and was about the size of a dashboard.
Walter Skrzypek
Falls Creek, Pa
> Hey gang,
>
> Are bicycle computers off topic? If not, when did handlebar mounted
> computers start being used, and what brands were common?
>
> Thanks.
>
> Jay Sexton
> Sebastopol, CA