[mschaef]

The Windows 1.0 clock (1988) had a 1Hz second sweep hand that ran on a 4.77MHz 8088. It's really just a couple clipped line segments each second.

http://variableghz.com/wp-content/uploads/2012/12/windows-1....

[jbmorgado]

Yes, that was the point I was making. This is something computationally trivial as long as the code is written appropriately.

[mschaef]

Keep in mind though, that the performance optimization the Windows article talks about is how to reduce the working set in memory more than the CPU consumption.