A-0 System
The A-0 system, written by
Grace Hopper in 1951 and 1952 for the
UNIVAC I, was the first
compiler ever developed for an
electronic computer. The A-0 functioned more as a
loader or
linker than the modern notion of a compiler. A program was specified as a sequence of subroutines and arguments. The subroutines were identified by a numeric code and the arguments to the subroutines were written directly after each subroutine code. The A-0 system converted the specification into
machine code that could be fed into the computer a second time to execute the program.
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Alpha et Omega
The Alpha et Omega was an occult order, initially named the
Hermetic Order of the Golden Dawn, co-founded in
London,
England by
Samuel Liddell MacGregor Mathers in 1888. Following a rebellion of
Adepts in
London and an ensuing public scandal which had brought the name of the Golden Dawn into disrepute, Mathers renamed the branch of the Golden Dawn remaining loyal to his leadership to "Alpha et Omega" sometime between 1903 and 1913. "The title was usually abbreviated as A.O." and according to one source its full name was "Rosicrucian Order of Alpha et Omega".
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