Another thread made me wonder this. One of the first things that struck me as odd years ago was the apparent reversal of the terms Upload and Download when it came to automation components.
Being a child of the early internet age, "Upload" always meant that I was copying a file FROM my computer TO a remote server on the internet. And "Download" always meant I was copying a file TO my computer FROM a remote server on the internet. Basically Upload was "Send" and Download was "Receive."
Then, when I got into PLCs and Automation, I found it was the opposite. "Upload" meant I was RECEIVING something and "Download" meant I was SENDING.
I was just curious as to why that is. The concept of uploading and downloading on the internet I'm sure date back to the very beginnings of the internet (then known as ARPAnet) in the 1960's, which is around the time PLCs got their start as well. Do any of the "historians" on this forum know why?
Being a child of the early internet age, "Upload" always meant that I was copying a file FROM my computer TO a remote server on the internet. And "Download" always meant I was copying a file TO my computer FROM a remote server on the internet. Basically Upload was "Send" and Download was "Receive."
Then, when I got into PLCs and Automation, I found it was the opposite. "Upload" meant I was RECEIVING something and "Download" meant I was SENDING.
I was just curious as to why that is. The concept of uploading and downloading on the internet I'm sure date back to the very beginnings of the internet (then known as ARPAnet) in the 1960's, which is around the time PLCs got their start as well. Do any of the "historians" on this forum know why?