This is the adhan, call to prayer, with some carefully-planned mastering and reverb.

I guess this is fairly close to what you would hear inside an airplane.
Contact me to request my sounds in higher quality.

hey, just like to say that I love this file where you made those Windows sounds all harmonize. Hope you know which one I mean.

Thanks...
Yes, got it.

You may find my latest track on my blog.
Looking forward to hearing your comments...

You can share it on website.
Browsing that will be easier.

Website?

Anyways, here's a keyboard sound that I recorded. I intentionally applied some reverb to prevent the raw sound being directly used by others. Contact me and inform me of why you wish to use it, if you want the original sound.
And the sorce of the sounds is not a computer. Guess what it is?
Huge thanks to my friend Burak for helping me with this stereo recording that I made. Now that I have HQ Recorder that enables me to record stereo with my iPhone, I hope more recordings will be coming soon.
Stay tuned!

Hmm, could just be the keyboard itself. I also know some things which make similar sounds and it was a lot of fun imitating keyboards with those but I can't remember what they were now.

Well it's a Braille display.

You can imitate a keyboard with a calculator or a phone I guess.

Ah yes, I see.

Yet another sound. Hope you like it.
The announcements and keypad sounds I recorded.

Wow, great! Which voice did you use for this?

Well... Let me PM you and decide whether we can post that here as well.

enes, can you do some sounds of that kind, but with hacking pentagon?

What? Why?
I'm not really knowledgeable enough about intel and extremely detailed technical cyber stuff, so whatever I will do will most likely be fictional.

Fictional electrocution...