How could an entire class of logic gates be overlooked? In the 1960s, things moved quickly from RTL (1961) to DTL (1962) then TTL (1963). While RFL could have been invented from about 1960, it was ...

An icon in the shape of a lightning bolt. Impact Link. ... If you've taken a science or computer science class in college, you've dealt with logic operators like AND/OR/XOR.