'put in' vs. 'input' (verbs)

In his article Unified Communications Revolution Bill Gates says the following:

You may have separate identities for email and instant messaging, plus a number you call for audio conferencing and a code you must input.”

Now, I was not aware that input can be used a verb in this way too. I mean, what is the difference between these two phrases:

… a code you must input
… a code you must put in
(phrasal verb)

By the way, what is the opposite of a phrasal verb?

Thanks,
Torsten[YSaerTTEW443543]

TOEIC short conversations: Plant redesign[YSaerTTEW443543]

Hi Torsten

I’d basically understand “to input” to mean “to enter (data) into a computer”.

“Put in” would be more general (or “low-tech”, so to speak).
I put salt in the soup.” :lol:

Amy

I agree with Amy here. As my friends might explain it, input is for the digital world, and put in is for the analogue world.