We use cookies to provide you with a better experience. If you continue to use this site, we'll assume you're happy with this. Alternatively, click here to find out how to manage these cookies

hide cookie message
80,258 News Articles

Did Wozniak invent the PC?

"They say I did," claims Apple co-founder

Apple co-founder made a thinly-veiled attempt to disguise his belief that he invented the PC in an interview with PC Advisor’s sister title, Macworld UK.

"It’s an ostentatious statement to say you invented the PC," admitted Wozniak, but, he conceded, that it might just be true.

"The statement is something I would never make in my life really, but a lot of other people have gone back and analysed it, and they say I did," he said.

To evaluate whether he should indeed be credited with the home PC revolution, Wozniak considered the factors that lead him to design the Apple II - the first computer he built that fulfilled the criteria he felt a computer should.

Prior to building the Apple II Wozniak had built the Apple I. He didn’t consider the original to be a proper computer, but it did form the prototype for what the Apple II became. The Apple I had its own influences. One of the most significant of these was the government Arpanet (the Advanced Research Projects Agency Network) which was the world's first operational packet switching network, and the ancestor of the internet.

"Probably I wasn’t supposed to be on it, but I encountered a friend who was on it, and he said he’d dialled this phone number and it put him on the Arpanet. Every computer on the Arpanet was set up to handle guests. It seemed totally legitimate. To me the Arpanet was extremely instrumental in developing personal computers because it gave me the motivation to build my own terminal,” Wozniak confessed.

"I came up with a way to build a terminal that could type to another computer and display the information from another computer for virtually no money," he explained.

The next step was building the Apple II. “When I built the Apple II all the other small start-up companies were building computers like the ones I had built five years before when I was at school,” Wozniak claimed.

The other major difference between the computer Wozniak built and the computers that other companies were designing was that humans could interface with the Apple II computer in a way that they hadn’t been able to previously. Normal people could key in instructions via the keyboard and see them on a monitor. Prior to this revelation, a computer had "a big ugly front panel with switches that so it can toggle 1s and 0s in the memory", explained Wozniak.

Wozniak’s conception of being able to interface with the computer in this way may have been influenced by his job at Hewlett Packard working on their scientific calculators. "Calculators were a small sort of computer," he explained. "The interface on a calculator is just a normal keyboard that anyone can understand, we all know what 5 means and what + means, and what enter means – well we had to teach them enter."

However, even Wozniak was unsure how much his job at HP influenced him in the design of the Apple II. The calculator suggested to Wozniak that he could write a program in ROM (read-only memory) that would start up as soon as he switched the computer on. Prior to that it was a difficult and time-consuming job getting a computer to run because each time he had to start from scratch. "Would I have thought to write a little program in a ROM?" asked Wozniak. "It’s difficult to say, maybe yes, maybe no," he conceded.

Wozniak conceded that he would have sought out a way of reaching his goal, even without these influences around him. He explained: "I had already built my terminal with a keyboard and a television set and I had to attach the microprocessor to it, so would I have gone with a big, ugly front panel? No, I’d done that five years before, I would have skipped that - you always have to improve. I think it would have happened even without the HP calculator, but it made it so obvious to me."

There was one final part of the puzzle Wozniak believed was required in a computer. "In my head a computer had to run a programming language. So the next thing was I had to learn how to write a programming language because without that I didn’t have what I would call a complete computer. I had to write my own Basic."


"Once I had the Basic, I had the computer I needed for the rest of my life, because forever I could calculate my engineering problems, play games and write programs, I could write programs for anything."

So, did Wozniak agree that he should be credited with inventing the personal computer? While he didn’t want to commit to a straight forward "yes" he certainly seemed to have convinced himself that was the case.


IDG UK Sites

How to watch the Windows 9 launch event: no live video stream so catch our Windows 9 launch live...

IDG UK Sites

Windows 9 and the death of the OS as a must-have product

IDG UK Sites

Video trends: 4K is here – HDR video, VR and 3D audio is coming

IDG UK Sites

Best iPhone 6, iPhone 6 Plus deals: iPhone 6, iPhone 6 Plus tariffs, contracts and prices UK