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Topic starter
23/07/2015 2:42 am
PIC: 5 megabyte hard drive being shipped out IBM 1956
photo no longer available
23/07/2015 6:06 am
Ah, memories! I used to operate an IBM 1401 system.
23/07/2015 6:17 am
+1. I also wired control panels for the IBM 402/407 and other EAM equipment.
John Bono
North Jersey
23/07/2015 7:36 am
We have come a long way since then.
My first thought comparison to this and the twelve buck 64gb thumb drive I carry in my pocket. I'm glad we have evolved to this.
Very cool pic Mr. Johnson
23/07/2015 5:17 pm
Hey guys, I used to fix 402/403s, 1401s, then onto 360 systems....
I even got my hands on the 305 RAMAC hard drive system.... What a mechanical marvel that one was... The one unit I didn't work on and didn't regret one bit was the unit (forgot the model number) that had a rotary drum that had cartridges of tab indexed magnetic strips about 3" by 8" in size. The system would spin the drum to a cartridge location and then snatch a strip by the tabs, wrap it around a spinning drum and then it was read/written by a magnetic sensing head. After completing the read/write function, the system would unwrap the strip and TRY TO STUFF IT BACK into the cartridge, all faster than you could see it happen...... SOMETIMES....... :))
25/07/2015 2:50 pm
Jerry, the system you described sounds somewhat similar to the IBM 3850......
It was down more than it was up.
John Bono
North Jersey