View allAll Photos Tagged vintagecomputing
My aunt and uncle had a Mac IIsi when I was growing up, and for some reason, they had one of these.
I finally got one a few months back, and an iMate ADB-USB adapter a couple weeks ago. The right-click doesn't work, but oh well.
It sticks a little bit, but it works pretty well for being almost as old as I am!
An array of nearly 200 discrete diodes marches across the circuit board of a 1967 Sanders 720 keyboard. The glass bead of each diode is about 7mm long.
Just removed and replaced this "popped" Rifa capacitor from an ACT Apricot Xi c.1983/5 computer's power supply (Astec PSU).
Arduino UNO provides 6 bit data and the necessary handshaking logic for a vintage Burroughs SSD0132-0040 Self-Scan gas plasma display c.1976. The row of LED blinky lights, aside from being mesmerizing, shows the state of the interface logic with delays built into the sketch to help diagnostics (on my first attempt I had the 6 data bits in reverse order).
The wire shrouded in red heatshrink tube on tag 10 of the lower connector is the +250 volt DC supply required by the Self-Scan
PowerBook 180
There's a story for this laptop.
Many years ago when my teacher (and later become my coworker) was a young man, he was assigned with a PowerBook 180 in a Big Four accounting firm. That's what he uses for auditing and writing reports, all sorts of stuffs until one day he left the company.
Rumor has it the laptop failed to startup someday in 1997. It was put into closet since then.
Many years later I came across a local internet auction and found this laptop, with the company name printed on it at the top of the case. Turns out it was the laptop that my teacher used many years ago when he was young, and the laptop was selling by a man who sells old laptops.
Time flies, they both getting old, and finally met again.
Macintosh 512K factory upgraded to Plus (M0001AP) with keyboard and mouse, ImageWriter II printer, and third-party hard disk drive, 3.5-inch drive, scanner controller and tape drive. The 5.25" drive is my mistake — it is from an Apple II and should not be connected to this set.
Small changes having a big impact. Introduced in 1960, Philco had by then improved their etching process to create the thin base layer of their germanium alloy junction transistors. They then replaced the indium electrodes making the emitter and collector junctions with cadmium, giving better thermal dissipation. Due to its speed and thermal performance, it became widely used in computers of the time. These were manufactured by Philco (later Philco-Ford) at their factory in Spring City, PA.
There is an AI processor chip now available with 49 billion transistors in one integrated circuit !!
It works, hfe (gain) is 96, Vf=273mV (so germanium).
Sol-20 is one of the very first home computer, developed by Lee Felsenstein at Homebrew Computer Club, ca. 1976: www.sol20.org
Commodore 64 with Datasette tape drive and Commodore DM602 display (Monitor80). Loaded on screen is Easy Script word processor.
Apple IIc (model no. A2S4000) with Apple Monitor (model no. G090S) and Apple Stand (model no. A2M4021).
From Family and Home Office Computing, November 1987, p.69
Source:
www.vintagecomputing.com/index.php/archives/1174/retro-sc...
Burroughs TD700 Self-Scan early gas plasma display screen, with control unit and keyboard, Design Level 4 c1973.
Yay... we have a cursor (of sorts - with a bit of ghosting on rows 4 & 7)) after 4 days slowly notching up the variac to avoid popping old capacitors.
I had already replaced the power socket, a defective mains fuse holder, and 2 corroded capacitors on cards "A" and "T" in the control unit cage. The faint pixels shown up by the cursor occur in the same positions across the row so I'm hoping this may be a resolvable logic or driver issue in the self-scan control card, rather than a write-off self-scan module.
The identity plate is stamped for 240 volts, but the power supply test points for 5.1v, 12v, -12v, 30v, and -250v were all up to required values on 110 volts AC supply from the variac..!
Elektronika MK-90 pocket computer produced in 1986 in Russia. Probably the most complex and most expensive Russian pocket computer ever made. The term 'pocket' is also a bit optimistic as well - measuring 27cm x 11.5cm x 4cm, it is quite a large beast!!
I've been trying to get hold of these pocket computers for at least 5 years now. This one is in good physical condition, but needs a bit of a clean up.