Transistor-to-transistor logic (TTL)

Transistor-to-transistor logic (TTL) is a type of digital logic built using bipolar junction transistors (BJTs) instead of the field-effect transistors (FETs) used in complementary metal-oxide-semiconductor (CMOS) logic. TTL is the most common logic family and is used in almost every electronic device that uses digital logic. TTL is distinguished from other digital logic families by … Read more


Subrogation is the process by which an insurance company that has paid out a claim on behalf of its insured member seeks reimbursement from another insurance company that is responsible for the insured’s damages. In the healthcare context, subrogation may occur when a patient has both private health insurance and public health insurance, and the … Read more