Saturday is the 25th anniversary of the introduction of the first Macintosh.

I first used a Mac back in high school in New Zealand, where I volunteered as head student librarian. The school had mostly Apple IIe computers, but bought one of the newfangled Macintosh computers in 1984. It was an original 128K Mac, with a single internal floppy drive. Back then, the OS, an application, and data fit on a single 400K disk. We used MacWrite for letters and other documents, MacPaint for occasional graphics, and the OverVUE database for some records... though not a full book catalog.

I bought my first Mac four years later while at university, in 1988. It was a Macintosh Plus, one of the new platinum-colored models. And I even had a second 800K floppy drive and a dot-matrix printer! Later, I added an external hard drive (I think it was 10 MB, though I could be wrong).

Those were the days... working on a 9-inch 512 x 342 pixel monochrome display... which is actually not much more than the iPhone screen resolution, to give some perspective.

Later I bought a Macintosh II, which I subsequently upgraded internally to be a Macintosh IIx. Then I used a number of other models provided by a Dejal client.

When my wife and I got married, Apple gave us a PowerBook 150 as a wedding present, since we had met while using Macs with the fledgling internet. Our wedding was covered on local TV news and newspapers. Yep, meeting over the internet was a novel concept back then.

Just before we moved to the US, we bought a clamshell iBook G3, which we still have, though I only use it for Mac OS X 10.3.9 compatibility testing. Then an iMac G4, which sadly seems to have passed away, a PowerMac G5 that I still use for Mac OS X 10.4 testing and as a music server, and lastly my current machine, a 17" MacBook Pro.

(We've also had a few other Macs: a Mac mini we use with our TV, a MacBook I bought to take to WWDC before I got my MacBook Pro, then subsequently gave to my wife's mom, and my wife has had a couple of 15" MacBook Pros.)

All in all, it's been a great 25 years. I've enjoyed using and owning the various Macs over this time, and look forward to many more years. Happy birthday, Mac!

Last year I was featured in MacTech magazine as their developer spotlight for the month. They asked me some questions about my background; here are my responses:

What do you do?

Dejal is a small ISV, so I do pretty much everything, including Cocoa development, customer support, accounting, PHP web development, graphic design, etc. I do have a developer that helps with Dejal Simon plugins etc, and I've used graphic designers for some app icons and the new Dejal logo. In addition to my own products, I do contracting work part-time.

How long have you been doing what you do?

I learned BASIC in 1982 as my first programming language, and knew that's what I wanted to do with my life. In 1988 I switched to Pascal on Mac Pluses at the University of Auckland in New Zealand, and started playing around with apps, but didn't sell anything until I created Dejal (originally called Dejal Userware, for user-friendly software) in 1991. Back then it was just a hobby, selling utilities for System 5 through Mac OS 9 (they're still available as freeware: http://www.dejal.com/classic/). There wasn't a web back then, though; I distributed my software via Compuserve, AOL, floppy disks, and later CDs, and provided licenses via airmail (from New Zealand), hand-written on photocopied certificates.

When my wife and I moved to the US in 2001, I learned Cocoa, developed my first Mac OS X apps, and registered my company as Dejal Systems, LLC in 2002.

Your first computer:

I got my first computer in 1983: a Sinclair ZX81, with 3.25 MHz Z80 processor, 1K of RAM, a cassette tape drive, tiny membrane keyboard, and hooked to a B&W TV. I first used a Mac at school: an original 128K Mac in 1984... but I didn't own one until I got a Mac Plus in 1988.

Are you Mac-only, or a multi-platform person?

Definitely Mac-only. I have a Windows box I got a few years ago for a project, but it just gathers dust.

Do the products you develop scratch a personal itch, or are they for others?

A bit of both. Obviously I need to keep marketability in mind when working on products. Most started out as fulfilling a need I didn't see being adequately serviced with existing products in the marketplace. Narrator started as a fun way to learn Cocoa. Simon began as a way for me to watch for website updates, and became more sophisticated as it became popular. I created Time Out to improve my health, since I can suffer from eyestrain when staring at a computer for hours on end. Caboodle was written to compete with others in the snippet-keeper market, as I didn't really like the approach existing ones took. Macfilink was created in partnership with an affiliate marketer to serve that community. BlogAssist was written specifically for my wife, who was really into LiveJournal blogging at the time. All of the products have grown and evolved over the years based on customer feedback -- it's really important to listen to what people say about products and incorporate their ideas into the design, as makes sense. I keep track of all suggestions, and tally votes for them to determine the most requested enhancements, to which I give priority when deciding on features for an update.

What's the coolest tech thing you've done using OS X?

One thing I'm quite pleased with is the Script plugin in Dejal Simon. Simon is a server monitoring tool that uses a plugin model for services, notifiers, and reports. The Script plugin allows running AppleScripts, shell scripts, Perl, Python, Ruby, or other scripts to perform checks and notifications for local or remote servers and processes. I like it as it leverages Mac OS X's unix underpinnings to significantly enhance the reach of the product. That would've been much harder under Mac OS 9 or Windows.

Ever?

I wrote an integrated environment for an old SpectraVideo MSX computer (loaded off 5.25" floppies) around 1986, complete with a basic word processor, spreadsheet, and more. It was never released, though.

Where can we see a sample of your work?

Try my products: free trials are available at http://www.dejal.com.

See my code: open source Cocoa at http://www.dejal.com/developer/.

Read my thoughts: subscribe to my blog at http://www.dejal.com/blog/.

The next way I'm going to impact IT/OS X/the Mac universe is:

I'm excited about the upgrades of the Dejal apps for Leopard. Simon 3 and Time Out 2 will be major upgrades, with much-improved UI and features.

Today is the 16th anniversary of founding my company. 16 years ago today, on September 20, 1991, I started Dejal, with an aim to produce high quality Mac software. Actually, the exact date could be argued: I had used the Dejal name informally for years before that, as a kind of nickname for myself, and the company grew organically over time, with things like getting a commercial bank account and registering the name at different times during the growth. But September 20th was when historic evidence points to me having started treating my programming hobby as a business.

I had produced a bunch of freeware products beforehand, but my first shareware product was called SndPlayer, a Classic Mac app to play a bunch of sounds easily. It was started on October 24, 1991, and first released on February 24, 1992. It's still available on my site (now freeware), too.

Thanks to everyone who's purchased products or offered congratulations this week. You've still got a couple of days to take advantage of the anniversary specials:

Buy now with the anniversary discounts!

Be quick — these specials expire on Sunday, September 23, 2007.

I first started selling Mac software under the Dejal name in September 1991... which makes this Thursday the 16th anniversary of the founding of the company. Wow... it's certainly been a while!

As a celebration of this event, I'm offering discounts on all of my products from today till the end of the week. No special codes or coupons required, but you need to use the online store, not the in-app purchasing tool, to take advantage of these low prices.

Buy now with the anniversary discounts!

Be quick — these specials expire on Sunday, September 23, 2007.