Everyone knows that there have been dramatic improvements in computers over the last two decades.

I could probably take the next 30 minutes and describe all the technical wonders and details of how processing speeds have been doubling every 18 months.

Or maybe why the internet is so much faster than it was just a generation ago.

But there is a much simpler way to describe those changes. How? We're just going to

use our ears. In this podcast, I'm going to speak with the CEO of a major audio branding company.

His name is Stephen Keller, and he put the sounds behind some of the well-known brands like

Cadbury and Purina. And I want you to tune your listening skills as you never have before.

We're going to actually let you hear this total evolution of technology.

Do you know what that was? Okay, let me tell you. That's the sound of an IBMPC booting into DOS.

All right, you may not know what that is, but this computer running DOS changed the world

when it debuted in 1981.

As a matter of fact, I remember, just to let you know, I had one of these.

Maybe you did too.

Now, you can track the progression of the personal computer by just listening to the startup sounds.

Okay, do you remember this one?

It's from Windows 3.1.

Next up, Windows 95.

And here we are, Windows 10.

Okay. And here we are, Windows 10. Your ears can tell you a lot about the progression of Apple computers, too.

When Steve Jobs debuted the original Mac 128 in 1984, its startup sound got a lot of attention.

It was so different. Here, take a listen.

That annoying beat persisted for the next few editions of the Mac, but eventually an Apple engineer by the name of Jim Riggs decided he was sick and tired of that sound.

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