#siganls

[othalafehu]

Tips for the Road #5 - Codes

Tips for the Road #5 – Codes

This is the Fifth installment of my ongoing series of Random Survival Information. Now we take a look at codes, both secret and public knowledge. Back in the days of actual hobos roaming around, they developed their own codes to mark the people and places they were passing by. Here is some of that code; The use of these marking is certainly on the decline over the decades. However, bad economic…

View On WordPress

[thileban-n]

The Continuous-Time Unit Impulse Function 2/4

[thileban-n]

(via https://www.youtube.com/watch?v=3fHWx2ATpwk)