IBM 5100, John Titor’s Mission From The Future - Stranger …
https://www.strangerdimensions.com/2011/10/03/john-titor-the-ibm-5100/
WEBOct 3, 2011 · In 1975, IBM released the first mass-produced portable computer, the 5100. It was an incredible feat for the time: An integrated 5-inch CRT monitor, up to 64 kilobytes of random-access memory (RAM), and the ability to run programs meant for larger, more expensive computers, all in something the size of a briefcase.
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