October 18, 2010: Just six months after the iPad debuts, Steve Jobs reveals that Apple’s tablet already outsells the mighty Macintosh computer.

During the company’s fourth-quarter earnings call, Jobs says Apple sold 4.19 million iPads during the previous three months, compared with 3.89 million Macs.

iPad: Fastest-selling electronics device ever … and a disappointment?

The figure marks an improvement on the 3.3 million iPads Apple sold in the iPad’s first quarter on the market. iPad sales account for $2.7 billion (or roughly 13%) of Apple’s $20.34 billion quarterly revenue. By October 2010, the iPad becomes the fastest-selling electronics device of all time, beating the previous record holder (the DVD player) by a significant margin.

In a sign of things to come, however, analysts express disappointment over the iPad’s success. They expected the tablet to immediately become an iPhone-size sales juggernaut. (By comparison, Apple sold 14.1 million iPhones in the quarter.)

Despite the iPad representing a significant revenue stream that didn’t even exist six months earlier, analysts expected Apple to sell 5 million tablets that quarter. So they chalked up the 4.19 million figure as a disappointment.

This silly theme continued in subsequent years. However many tablets Apple sells — or however varied the iPad’s uses, adoption and sales — critics frequently write off the device as falling short of expectations.

Steve Jobs says iPad will be ‘really, really big’

Jobs, however, wasn’t having any of it. “I think we’ve got a tiger by the tail,” he said, answering a question about the iPad’s likely sales trajectory. “I think it’s going to be really, really big.”

He also used the occasion to throw some shade on Apple’s rivals. Their 7-inch tablets offered just 45% of screen real estate of the first-gen iPad‘s 9.7-inch display.

Jobs proclaimed these rivals “DOA — dead on arrival.” Scathingly, he refused to even acknowledge them as “competitors,” but more as “qualified entrants” into the market place.

Finally, he took digs at Google, who advised manufacturers not to use the current version of Android for their tablets. “What does it mean when your software supplier tells you not to use their software on your tablet?” Jobs asked.

By Luke Dormehl of •