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→Appendix B
Fig. B1 shows the emulated alarm signal (magenta) and the signal used to update the 7-segment displays when the timer reaches 50.000 (light blue). This signal is connected to the "latch clock" inputs of the shift registers so that all the displays are updated simultaneously.
Turning on/off LED's is a very fast process, comparable with the propagation time of the shift register itself. Thus, it can be assumed that the displays show 50.000 within a few tens of nanoseconds after the rising edge of the latch clock. This , that is long microseconds before the assertion of the emulated alarm signal, proving . This proves the correctness of the timer implementation.
==Credits==
*Industrial automation image source: [https://www.freepik.com/vectors/technology Technology vector created by macrovector - www.freepik.com]
