My First Day. Sacred Heart Hospital was a private teaching hospital in San DiFrangeles, California. It offered emergency services, clinical help, and other medical processes. It had a large staff of surgical and medical doctors, and offered a great educational setting for medical students and interns.
The Joint Test Action Group (JTAG) is an electronics industry association formed in 1985 for developing a method of verifying designs and testing printed circuit boards after manufacture.
In JTAG, devices expose one or more test access ports (TAPs). The picture above shows three TAPs, which might be individual chips or might be modules inside one chip. A daisy chain of TAPs is called a scan chain, or (loosely) a target. Scan chains can be arbitrarily long, but in practice twenty TAPs is unusually long.