OV-1.1 CSE244 CSE 244 -- Short Historical Intro Aggelos Kiayias Computer Science & Engineering Department The University of Connecticut 371 Fairfield Road,

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Presentation transcript:

OV-1.1 CSE244 CSE Short Historical Intro Aggelos Kiayias Computer Science & Engineering Department The University of Connecticut 371 Fairfield Road, Box U-1155 Storrs, CT 06269

OV-1.2 CSE244 Computing in the beginning of time.... ?

OV-1.3 CSE244 Computing in the beginning of time how do you program this??Changing Gears! the man the legend and this is only a small part of the machine! the programmer Charles Babbage The Difference Engine” (1822) Lady Ada of Lovelace

OV-1.4 CSE244Computers!  Electronic Numerical Integrator and Computer --- ENIAC, 1942 how do you program this??Flicking Switches!

OV-1.5 CSE244Timeline  the 1940’s. Code is hand generated at 0-1 level and entered by physical switches. Hardware is rewired according to the program.  the early 1950’s. First attempts to abstraction. Grace Murray Hopper:  “translation is a compilation of a sequence of machine-language subprograms selected from a library.”  first “compiler” A-0 (by G. M. Hopper)  Code now is written in Assembly form.  the late 1950’s. FORTRAN is born together with its Compiler!!!

OV-1.6 CSE244Fortran diagram from

OV-1.7 CSE244 the 1960’s  ALGOL 60  The first Language with a formal grammar specification  more on this later on (in every meeting of this class!)  FORTRAN gets improved.  Language theory is better understood, it evolves and revolutionizes compiler design.  First “Syntax-Directed Compiler” is born in  PASCAL is born (Wirth, 1968).  First attempts at automating compiler construction using elements of Formal Language Theory.

OV-1.8 CSE244 The 1970’s, 80’s, 90’s  C programming Language is born with its compiler (1972). Distributed as part of the UNIX operating system.  BASIC is born (1975).  “Compiler-Compiler” Tools start to be developed and used extensively.  Success of PCs brings compilers and interpreters in everyone’s home.

OV-1.9 CSE244Today  Compilers are everywhere.  “Programming” (in the strict sense) is only one application domain...  TeX and LaTeX  language source is compiled into a document.  Postscript  language source is translated by laser printers to printer machine level instructions that print a document.  Mathematica / Matlab  use a language to specify mathematical operations.  Verilog / VHDL  compiles into a circuit  you name it...