Complex sentence: While originally designed to handle logic-level digital signals, a TTL inverter can be biased as an analog amplifier, connecting a resistor between the output and the input biases the TTL element as a negative feedback amplifier.
Split into simpler sentences: While originally designed to handle logic-level digital signals, a TTL inverter can be biased as an analog amplifier. Connecting a resistor between the output and the input biases the TTL element as a negative feedback amplifier.