"The #HP35 had numerical algorithms that exceeded the precision of most #mainframe computers at the time. During development, #DaveCochran, who was in charge of the algorithms, tried to use a #Burroughs #B5500 to validate the results of the HP-35 but instead found too little precision in the former to continue. #IBM mainframes also didn't measure up. This forced time-consuming manual comparisons of results to mathematical tables." #HewlettPackard

#DaveCochran on the birth of the legendary #HP35 #RPN #calculator
https://youtu.be/0IlSjfgrHVM