The Original IBM Thinkpad Was a Literal Notebook

Not a lot of processing power here.

When you hear the name "Thinkpad" what comes to mind? A black, boxy, business-grade laptop with a tiny red nub for a mouse? Naturally, but that's not what the first thinkpad was in the slightest. As it turns out, the iconic computer line got its name from a much more literal notebook. 

The original Thinkpad—perhaps more accurately styled as "THINK pad"—was a small, paper notebook given to IBM employees long before the advent of the computer. IBM's iconic "THINK" slogan was adopted way back in the 1920s, and adorned the cover of small notebooks for decades before the computer brand launched in 1992. Some are still available on the internet and Youtuber LGR got his hands on one from the 1950s and gave us a closer look:

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source:https://www.popularmechanics.com/technology/gadgets/a19491812/the-original-ibm-thinkpad-was-a-literal-notebook/