Another ironic part of this is back when 640k was a lot you'd pay 4 times for that then for what you'd pay for 500 gigs today.
First machine was a Monro-Litton programmable calculator, if you don't count the MC6800 evaluation kit (which was a CPU and a ROM, that's it).
U of W had a Cyber 73 / CDC 6300 dual mainframe with 128k of extended core. Two sides of the operation, the "batch" side -- turn in your card deck -- and the "interactive" side where you used at VT-100 terminal.
Built an Altair 8008 and later converted it to first an 8080 and tehn a Z80 cpu. front panel switches & paper tape, though later w/ CPM an 8" floppy drive. S-100 bus machines.
Then came the TRS-80 Model II -- worked at a place that had a board stuffing and wave soldering contract with Tandy. Scored a scrap board and a large box of scrap parts, mostly scrapped due to bent pins.
I hand soldered sockets onto the board for all the chips and made a clear plexiglass cast for it. I actually got it to work, too.
Navy had a Harris oddball computer, a 24 bit machine. Odd thing, used mag core memory. which was non-volitile. It had a mag tape drive. Oh, and yes, still front panel switches.
Then there were the Univac 618's and the AN/UYK-20 machines that ran NTDS and teh scopes in CIC. Mag core memory in those, as well.
On to the IBM PCXT and the Kaypro, and the first networks -- remember Token Ring? Novell, which came on a set of 50 or so 5.25" floppies! About that time started working with Sun and HP unix boxes. Arpanet and Gopher servers....
Got into digital video stuff in the early days of that, worked alot with SGI boxes.
Worked a Intel I860 parallel machine for a while, that was a wierd contraption! Got to go the school on it in Portland, the Intel supercomputer systems design center. Saw Oak Ridge's massivly parallel box... kinda cool.
Did some DSP programming along the way....
I don't do computers any more. They are appliances these days. Nowadays I am strictly a user....