BBC News - Microsoft founders lead tributes to 'father of the PC'
The "father of the personal computer" who kick-started the careers of Microsoft founders Bill Gates and Paul Allen has died at the age of 68.
Dr Henry Edward Roberts was the inventor of the Altair 8800, a machine that sparked the home computer era.
Gates and Allen contacted Dr Roberts after seeing the machine on the front cover of a magazine and offered to write software for it.
The program was known as Altair-Basic, the foundation of Microsoft's business.