I use a 1998-vintage “Pismo” Powerbook for our kitchen Internet Kiosk. It’s connected to the Internet by WiFi, and is a little poky on some sites, but by and large, works fine. I’m also running an uptime contest with it - it’s been 220 days since the last reboot.
I have a PET 2001 that I started my programming career on, but I’d be lying if I said I used it regularly. I did drag it out a few months ago to demonstrate how to write a game is six lines of BASIC, though.
My oldest computer that’s actually used is a 486 Toshiba laptop that has BSD installed on it now. The video adapter isn’t supported, but I’m using it as a WAN simulator, so I’m not running a GUI on it anyway.
I’ve got a 1 GB SCSI HDD from 1993. I’m using it as a speaker stand. 
I still use my handheld Psion II from, I think, 1986 every day… mainly as a calculator and clock/alarm though, because the memory is becoming unreliable…
My keyboard is an original Microsoft Natural Keyboard, circa 1994. I’m never giving it up. The new ones are not the same.
I think that’s the oldest thing I still use. Oldest thing not in use - a Logitech mouse from the mid-1980s. It was a promo mouse given to computer stores for demonstration purposes, and it’s encased in clear plastic so you can see the insides. It’s so cool I’m never going to get rid of it. I bet it still works. One day I’ll hook it up and find out.
Does the monitor stand count? The brand is “The Last Stand” - I bought it for my Amiga 500, in about 1987.
Been through many computers, still using the same stand. It is a very, very good design.
Currently it would be an almost 20-year-old 3.5" drive. I’m pretty sure we bought it special before our first computer fried and we had to get a new one back in 1992 or so. Up until then we’d just kept upgrading the same Gateway 2000 we got in 1987-I-think-it-was.
If I could have found a way to hook it up (ran out of ribbon cables) I would still have the 5 1/4 inch drive that came with the original G2k. Partly because I actually do still have working 5 1/4 inch disks, partly because I just find it a nice way of remembering our first computer, partly to confuse any children who see my computer and think this might be some new strange high tech DVD player.
Oh man! I wanted one of those when I was in electronics school…
I have an old 1984-ish Atari 800 computer that I still hook up from time to time to play Pacman (on cartridge). I also still have the cassette drive and 5.25" floppy, along with dozens of cassette games and hundreds of disks, but I’m not sure those would work after all this time. Maybe I’ll try loading up M.U.L.E. next time I decide to hook it up and see if I can hear that marvelous theme song just one more time.
Wow, you too? I was going to post the exact same thing. Same year and brand, even.
Unfortunately, they just died earlier this week. I’ve been putting off buying a new machine, but one by one various parts keep dropping hints that it’s time to go shopping by breaking down.
I still use a 1986 ITT 8bit PC (IBM knockoff) now running DOS 6.2 (2.11 original OS) It has run my computer controlled Geiger counter 24/7 since 1995. In all that time I’ve only replaced the MFM hard drive controller. It has all these features:
*4.77Mhz 8088 processor
*64kb ram on motherboard
*A full-length 576kb ram expansion board
- 720k floppy (back when floppies could flop)
- incredibly expensive (at the time) 20Mb Seagate ST-225 MFM drive
- Hercules monochrome graphics (16 color grayscale green)
- 300bps external modem with acoustic-coupler for a telephone handset.
My Mother worked at the NSF in the 80’s this was her computer. When they upgrade to 286’s she was given the option of buying it (for $2400! what a bargain!)
An IBM PC, the 4.7 MHz kind, with 64 kB of RAM, made in late 1981, that I fire up once in a while.
A Gateway 2000 286 system that’s still complete with the original manuals and some of the original boxes, that is set up to talk to an EPROM programmer.
Two 386/387 combos running DOS for data acquisition.
At the office, a 486DX tower running DOS for data acquisition.
I also have a RadioShack Color Computer that connects to a television for its display, which I think works, but it’s not been used in years.
I still own a Timex Sinclair with additional RAM module. It’s the only slots game I like.
The Pismos were first released in 2000. You might have a “Lombard” model?
To answer the OP: I have an Apple IIc Plus that I boot up a few times a year, just for noodling around, playing an old game, or wallowing in nostalgia. That might not count as a true example of “still using”, but there it is. I also own some IIc and IIe machines, but they’re boxed up and hardly ever touched.
I bought the IIc Plus about six years ago from a guy in Washington state, though the machine itself goes back to 1988-1990. I didn’t own one when they were new.
Amusing side note: I bought a second IIc Plus on Ebay a couple months ago, mostly to have a source of spare parts for the first one. But the owner was advertising it as a “Macintosh IIc”, and selling it for about a third of what you can normally get. (It was a rare model, relatively speaking.)
If it was purchased in '98 it would be a WallStreet, same as mine. A fantastically great computer.
ADB and classic Mac DIN-9 serial port instead of USB, SCSI instead of FireWire, two (not one) PC card slots, battery can work in either media bay? That’s a WallStreet. Has USB but still has SCSI instead of FireWire? Lombard. Got FireWire? Pismo.
Still use? My Commodore 64 from 1983. I love those old cartridge games like Pitfall and James Bond.
Still in operating condition? TRS-80 Model 1 from 1980.
I bought a complete computer for the first and last time in early 1995. (Before and after that, I’ve always built my own.) The 3½" floppy drive from it is installed in my computer, but like most people, I never use it. Its speakers are in use, with my daughters’ computer.
I also have a 5¼" floppy drive physically installed in my computer for old times’ sake, but my motherboard doesn’t support it.
I think my Microsoft natural keyboard is pretty old. Circa 1996 at least. The plastic is starting to yellow from age. I’ve never had a reason to replace it, although I’ve taken it apart to clean it more than once.
My mom uses a hand-me-down monitor that I originally bought around 1996 too. It still works fine and she has no complaints about it.
Every now and then I haul out my Commodore 64 and fiddle with some programs that I wrote for it in the 1980s.
A Zenith Z-Note 386, bought by my father’s company ca. 1992. It hung around there until the test programs wouldn’t work anymore then fell off the end of the equipment audit trail. It plays SimLife in glorious 640 x 480, 16-color VGA.
The oldest pieces of computing equipment I have and still use are a pair of slide rules that my father used in engineering school, where he landed immediately after graduating high school class of 1969. I don’t use them often, and mostly for demonstrations, but I get a great reaction when I walk into class with them.