Superb History of Computing -- Paul Allen's Estate Sale (ended) [ @ Christie's ]

[UhClem]

While tracking down some minutiae on the DEC PDP10/KA10 (machine I taught myself to program on, 1968), I happened upon the above.
[Link]
Within each Lot, the (text) Details are accurate and enlightening; the images are very crisp, with a nice viewer.

Enjoy!
e.g. (2 of 58 Lots)

 

[i386]

Paul Allen

I mistook him for steve wozniak for a second...

Not sure how many people learned to program by entering the op codes as bytes/hex numbers

 

[piranha32]

Not sure how many people learned to program by entering the op codes as bytes/hex numbers

Home-built computer with Z80, 8-digit 7 segment display, and hex keyboard. To program I had to enter the codes in monitor and then jump to the start point. Thankfully it had tape recorder interface, so I could save the programs.
I developed a hack to autostart programs after loading from tape by overwriting NMI trampoline conveniently located in RAM (NMI was periodically triggered by an RTC circuit)