This automotive circuit was obtained from an 80's schematic from the integrated circuit factory itself. The voltage regulator is still common, but the operational amplifier is of the time.
Found in a documentation from the 90s, this circuit has a typical accuracy of 2% with 20 V signals at...
With a touch of switch S1 the motor starts and remains so until a touch of switch S2 turns it off....
The old computers like the MSX of the 80's had the programs recorded on cassette tapes in the form...