What computer program developed in the late 1970s convinced many people to buy their first computer?

This programs was what is now called "notepad" a simple text application with the ability to open, save, save as, and change fonts to the selected text.

It was not a personal computer it was industry. Military,company's.

http://en.wikipedia.org/wiki/ENIAC From what i gathered, mainly 6 i think.

no 1

Electronic computer is may faster and smaller than the first developed computer. Electronic computers today uses small electronic devices and integrated circuits. Long time ago they use vacuum tubes...