To keep TOS canon, we have to change 20th century history as I see it. (the voyage back to the past with the whaleprobe was a history caused by Voyager era
This to me allowed microchips to come on line faster
To me, the microchip was something that should have been invented on the Moon--in that both the USA and the USSR built larger and larger LVs (UR-500, DY-500 etc)
This allowed spaceflight to advance.
The microchip came only after spaceflight was well advanced by heavy lift
In ENTERPRISE, some other boost came by to make up time lost due to microchips driving down the size of LVs and thus delaying a more 1950-ish conquest of space that should have been TOS 20th century.