The competing diode-transistor logic (DTL) circuit ... as TTL is that ECL is very fast due to its emitter-following nature, using a single overdriven bipolar junction transistor (BJT). The design ...

Description: The 5400/7400 series of transistor-transisto r logic consists of medium speed TTL integrated circuits. This high noise immunity family was designed for general digital logic applications ...

Shortly after, transistor-transistor logic (TTL) circuits appeared, and somewhat later complementary metal-oxide-semiconductor (CMOS) devices became available. Faster circuits were produced in emitter ...

So we present the simplest TTL video card ever knowing the same thing ... [George] gives a tour of the circuit in the brief video below. It looks like [George] has posted a few improvements ...