South Korea’s output of semiconductors jumped the most in 14 years in February in an indication of ongoing recovery in the country’s most important industrial sector and global tech demand.Production jumped 65.3% from a year earlier, the biggest rise since late 2009, according to data released Friday by the national statistics agency. Shipments of semiconductors also rose 59%, even though it was weaker than 62.7% in January. Inventory shrank 16.2%, falling for a second month in another sign of s...