Ray Tomlinson, the inventor of the email system, did not invent the @ sign. It had been in existence for hundreds of years. He just used it in an email address and made it popular once again.
The world's first hard disk couldn't be bought as an individual device. You had to get the computer with which it came. The computer, IBM305 RAMAC, itself was only available on lease for $3200 per month. [more...]