If you want to accept data from a parallel port, all you really need is an 8-bit latch and a little glue logic.
Most computers used TTL-compatible "glue logic" between larger chips well into the 1990s.
Multiprocessing was facilitated by a router that provided links to other 21464s, and it architecturally supported 512-way multiprocessing without glue logic.
ZK is a Java Ajax framework that allows glue logic written in Jython.
Typical functions of glue logic may include (but not limited to):
The software equivalent of glue logic is called glue code.
Knowledge of a scripting language to write the glue logic (running on the server):
RPD-1 - floppy disk controller, due to its complexity (discrete glue logic) was built on two boards connected by cable.
The system clock timings are derived from the video frequency, which simplifies glue logic and allows the Amiga 1000 to make do with a single crystal.
Gary provides glue logic for bus control and houses supporting functions for the floppy disk drive.