You’ll (perhaps) be glad to know that after hitting some mysterious key-combo on the keyboard at work, when this heretofore undiscovered & unimagined window popped up on my computer screen, I did not hit “Cmd6.”

Be thankful? Maybe?

Who knows, you might have woken up this morning in a very different world. And I may have suddenly found myself sitting in a barnyard with a cow licking my cheek.

#Cmd6ChangeCentury #ChangeCentury #Cmd6 #Cmd12CANCEL #Computer #WorkLife #AS400 #DOS #MainframeMonday

#MainframeMonday Today's mainframe is the Lyons Electric Office (I) - first commercial computer ever built! Based on the Cambridge/Wilkes EDSAC design. https://en.wikipedia.org/wiki/LEO_(computer) #ComputerHistory
LEO (computer) - Wikipedia

#MainframeMonday The IBM 9020 was a "clustered" system for FAA air traffic control consisting of multiple IBM 360s - for redundancy and parallelism. https://en.wikipedia.org/wiki/IBM_9020 #ComputerHistory
IBM 9020 - Wikipedia

#MainframeMonday Since I'm just back from Princeton reunions, today's mainframe is the IBM 360/91 - first "super" class computer in the IBM 360 family. Princeton got theirs in 1969 and ran it for about 10 years. I worked 4 years on the beast at the PUCC - but I never got to touch it! Also pictured is the console that was saved and lit up at the LCM in Seattle - along with photos of Lee Varian, Pete Olenick, and Melinda Varian - systems programmers for the PUCC.
#MainframeMonday The BESM-6 (БЭСМ-6) was the most successful Soviet supercomputer, starting production in 1968, and about half the speed of a CDC-6600. https://en.wikipedia.org/wiki/BESM-6 #ComputerHistory
BESM-6 - Wikipedia

#MainframeMonday Bryant Computer Products, a division of Ex-Cello Corp., made these gigantic hard drives in the early sixties - resold by larger companies, most notably as the CDC 6603 with the CDC 6600. I possess one of the 39 inch(!) platters. [Not one meter, this is 'Merica after all] #ComputerHistory
#MainframeMonday The #MANIAC I was a very early computer built at Los Alamos; and also a very early #backronym - ***M****athematical ****A****nalyzer ****N****umerical ****I****ntegrator and ****A****utomatic ****C****omputer Model. *https://en.wikipedia.org/wiki/MANIAC_I
MANIAC I - Wikipedia

#MainframeMonday OTD 1989, CDC shuts down their ETA Systems subsidiary - the last hurrah of Control Data supercomputing. The ETA Saga: https://yarchive.net/comp/eta_peglar.html #ComputerHistory #ETA #ControlData
The ETA Saga (Rob Peglar)

#MainframeMonday 59 years ago this week, IBM announced the System/360 family of computers. Enormous impact on computing. And those colors! #ComputerHistory