Randy wrote:

> A real-time system is a system that has a period and a well-defined
> maximum amount of work to be done in that period and that can perform
> that amount of work in that period.
>
> Latency is input to output delay.

Now think about it: the work a system does is to transform an input
into an output. And the "period" limits the amount of time that the
system may spend on the work, ie. the amount of time the system has
available to transform an input into an output. So, by your
definition, a real-time system is a system that has bounded input/
output latency.