Compilers (Computer programs) Programming languages (Electronic computers) 6 Congresses 4 Computer programming 2 Parallel processing (Electronic computers) 2 Parallel programming (Computer science) 2 Software engineering 2 Systolic array circuits 2 ALGOL (Computer program language) 1 Clipper (Computer program language) 1 Compiling (Electronic computers) 1 Computer programs 1 Computer science 1 Computer scientists 1 Database management 1 Design and construction 1 Electronic digital computers 1 Pascal (Computer program language) 1 Research 1 Verification 1