Technological knowledge: society’s understanding of the best ways to produce goods and services
Technological progress does not only mean a faster computer, a higher-definition TV, or a smaller cell phone.
Think about how farm technology has improved a smaller fraction of the population n can produce enough food to feed the entire country techno change made labour available to produce other goods and services.
It means any advance in knowledge that boosts productivity (allows society to get more output from its resources).