There was no invention, per se. However, there is a theory called Moore's Law that says every two years, computers will double the number of transistors on an integrated circuit. Translated from geek: every two years a computer of the same size will have a 40% increase in speed over last generation. That's why they can be both small and fast nowadays. Take a look at the Wikipedia article on Moore's Law if you are interested.
This is the transistor. It was built smaller with more speed and a little bit less power so that computers were smaller and lighter.
The invention of the microchip
microprocessors
dummy
Bill Gates and Steve Jobs brought personal computers into the home.
The CD could hold more sectors of data thus allowing for an improvement in Personal Computers.
The ISSO
personal computers were more affordable (apex)
You are responsible for your personal safety.
Macintosh computers are a personal computer.
personal computers were more affordable. -apex
When personal computers began to connect to the Internet?
Yes. You can refer to a "personal computer" as just a "computer"
So Commodore played a huge role in establishing the computer on people's desks. The term PC was established by the IBM PC (IBM Personal Computer ) ...
Most of the personal computers are usually microcomputers. They include the laptop computers, the desktop computers, the tablet computer, and the smartbooks.
Modern Apple computers are referenced to as Mac computers or Macintosh computers