Analysis of information sources in references of the Wikipedia article "Microprocessor chronology" in English language version.
The first processor using these principles, called ARM-1, was fabricated by VLSI in April 1985, and gave startling performance for the time, whilst using barely 25,000 transistors
System announced at FJCC in Vegas in fall '70. First order from EasternSlide #13 has arrow on year 1970.