862 APPENDIX C / IEEE STANDARD SYMBOLS
be that it is, in fact, a standard that professionals can adhere to. The problem is that not all
of industry uses the standard, which leads to a mix of notation and symbology. The new
ANSI/IEEE Std 91-1984, IEEE Standard Graphic Symbols for Logic Functions, is based on
the International Electrotechnical Commission (IEC) standard 617, and its use is required
by the U.S. Department of Defense (DOD). For those wishing more information on the
IEEE standard, the references cited in Further Reading should be helpful.
FURTHER READING
Perhaps the best way to begin to learn the IEEE standard symbology is to read those texts
that either emphasize its use or have included a detailed summary of it. Such texts include
those ...