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.
JTAG just requires a three bits output and a one bit input, so that's no problem. For example, take a look at the schematic of Xilinx's parallel-III cable. You can see on the left the PC's parallel signals, one the right the JTAG connector, and in the middle a few 74HC125 electronic buffers.