And if you’re less interested in presidencies past and more interested in the one that’s about to start, check out my friend and former colleague Mark Sullivan’s guide to following the inauguration on the Web over at PCWorld.com.

But what was the greatest year in technology history–the one that saw the highest number of significant products appear and/or other important events transpire? As far as I know, nobody has ever asked that question, let alone attempted to answer it. Will you join me in trying to figure it out?

In the coming days, Technologizer will recap significant moments, year by year and decade by decade, and give you the chance to vote on the years that made the biggest difference. For reasons of practicality, we’re beginning all this with 1970–we’re pretty sure that the greatest year, whatever it may be, happened in the past 39 years. (If you want to advocate for an earlier year, we’ll give you the chance to do so at some point via write-in votes; anyone know for sure what year the wheel was invented?) We’re also defining technology to cover personal technology relating to information and entertainment: PCs, Web stuff, TVs, MP3s, phones, and GPS, but not airplanes, cars, or clones. Eventually, we’ll winnow down the contenders and determine a winner.

And nope, there’s no hidden agenda here: I can think of half a dozen years that are contenders, but I’ll be as surprised as anyone else when we determine what the Single Greatest Year in Tech History is. Which we’ll do before the end of 2008.

So without any further ado, return with us now to the decade that gave us Apple, Microsoft, PCs, networking, word processors, spreadsheets, gaming consoles, and a whole lot more…

1970

Got RAM? Sure you do–gigabytes and gigabytes of it, maybe. And it’s all the modern offspring of Intel’s 1103 chip, the first commercially-available dynamic RAM, which the company unveiled in 1970. It stored a whopping 128 bytes of data. Which, back in those days, was enough memory to get excited over.

1971

In 1971, the concept of personal computing was still years away–but it was a big year for the building blocks would eventually make personal computing possible. For one thing, one of the machines which would eventually be among several that would jockey for the honor of having been the world’s first personal computer was released–John Blanenbaker’s Kenbak-1. It cost $750 and came with 256 bytes of memory. It was also the year that Intel shipped the first microprocessor, the 4040; it powered calculators and was the predecessor of the 8080, the first real microcomputer CPU. Then there was the floppy disk, invented in 1971 by IBM and available at first only in jumbo-sized 8-inch form. And while e-mail existed before 1971, this was the year that Ray Tomlinson wrote a program to let messages be sent between computers on the ARPANet, which is what the Internet was known as back then. (Tomlinson needed a way to identify what computer a particular e-mail account resided at. We use his solution–the @ sign–each time we send an e-mail to this day.)

1972

If you’d heard of Hewlett-Packard back in 1972, chances were good it was because of the company’s calculators. The HP 35, introduced in 1972 for $395, was the company’s first pocket model–a little miracle in an age when the slide rule still…ruled, and the predecessor of pocket calculators which HP offers to this day. 1972 was also the year that Atari released Pong. It wasn’t the first video game (or even the first tennis one, or the first Atari one). But by just about any measure, it was the video game that introduced America to videogames. Also new in 1972, and historically important if far less pervasive than Pong was Magnavox’s Odyssey, the first video game console. And then there was Polaroid’s SX-70, the first truly hassle-free instant camera; it made the cover of  both LIFE and TIME when it was released, and I for one would still find it to be kind of amazing if it were released today.

1973

The ubiquitous Network connection known as Ethernet was one of a gazillion essential aspects of modern computing that emerged from Xerox’s PARC laboratories. Co-invented by Bob Metcalfe and David Boggs, it was proposed in May 1973 and first worked in November of that year. PARC also designed the Alto, the legendary workstation that had a slick graphical user interface, a mouse, and other advanced features in an age when you still programmed many computers by flipping switches. (The Alto was never available commercially, but the rest of the industry spent the next twenty years ripping off Xerox’s brainstorms.) Also new in ’73: The Micral-N (image at right), another contender for the title of first personal computer. That distinction remains subject to debate, but it does seem to have been the first computer that was based on a microprocessor (Intel’s 8008) and which didn’t require buyers to put everything together themselves. (Which surely counts for something–quite a lot, actually.)

1974

Intel’s 8080–the first microprocessor that was powerful enough to make the idea of a truly sophisticated microcomputer plausible–shipped in April. Shortly before Christmas, Popular Electronics published a cover story on MITS’ Altair 8800, a microcomputer based on the 8080; the Altair didn’t actually ship until 1975, but it was by any definition the first truly popular PC. This was also the year that Gary Kildall completed work on a quixotic personal project called CP/M–a microcomputer operating system that dominated personal computing in the late 1970s and served as obvious inspiration for Microsoft’s MS-DOS.