Inventors and Scientific Discoveries

Grace Hopper developed Flow-Matic in the 1950s, which directly influenced the creation of COBOL for business data processing. Ritchie created C, Joy developed vi and contributed to Java, and Wirth created Pascal.

Kenneth E. Iverson developed APL (A Programming Language) in the 1960s, known for its concise mathematical notation and array processing capabilities. Stroustrup created C++, Ritchie developed C, and Kay pioneered Smalltalk and object-oriented programming.

Bill Joy created the vi editor at UC Berkeley in 1976 as part of the BSD UNIX distribution. Dijkstra contributed to structured programming, Stroustrup created C++, and Kay pioneered object-oriented programming with Smalltalk.

Alan Kay led the development of Smalltalk at Xerox PARC in the 1970s, pioneering object-oriented programming concepts. Cooper created Visual Basic, Joy developed vi, and Iverson created APL.

John von Neumann is widely credited with originating the concept of the operating system and modern computer architecture (the Von Neumann architecture), which includes stored-program execution and shared memory for data and instructions.

Dennis Ritchie developed the C language at Bell Labs in the 1970s as a systems programming language for UNIX. Joy created vi and contributed to Java, Dijkstra contributed to structured programming theory, and Kay pioneered object-oriented programming with Smalltalk.

Bjarne Stroustrup created C++ as an extension of the C language, adding object-oriented features. The other options created different languages: Niklaus Wirth (Pascal), Bill Joy (vi and BSD tools), Alan Kay (Smalltalk).

Ken Thompson created UNIX at Bell Labs in 1969. Edsger W. Dijkstra contributed to algorithms and computer science theory, Niklaus Wirth created Pascal, and Bill Joy contributed to BSD Unix.

Niklaus Wirth developed Modula and Modula-2 as successors to Pascal, emphasizing modular programming principles. Dijkstra contributed to algorithms and formal methods, McCarthy created Lisp, and Cooper designed Visual Basic.

JUnit was created by Kent Beck and Erich Gamma in 1997. Beck is known for Test-Driven Development and Extreme Programming, while Gamma is co-author of the influential Design Patterns book.

Yukihiro Matsumoto (often called 'Matz') designed the Ruby programming language in Japan in the mid-1990s. Ruby was created to be more flexible and programmer-friendly than Perl, emphasizing simplicity and productivity.

Linus Torvalds created the Linux kernel in 1991 while he was a student at University of Helsinki. The other options are fictional or refer to different people (Linus Pauling was a chemist, Linus Van Pelt is a Peanuts character).

Walter Shewhart introduced control charts at Bell Labs in the 1920s as tools for monitoring process variation and maintaining quality control. Deming popularized Shewhart's methods later. Taguchi contributed robust design methods. Fisher developed experimental design principles. Shewhart is the correct originator of control charts.

John McCarthy invented Lisp in 1958 at MIT, making it the second-oldest high-level programming language still in widespread use. Ada Lovelace wrote the first algorithm (1840s), Herman Hollerith developed punch-card tabulation (1890s), and Konrad Zuse built the first programmable computer (1941).

John Kemeny and Thomas Kurtz designed the original BASIC programming language at Dartmouth College in 1964 to make computing accessible to non-technical students. Yukihiro Matsumoto created Ruby (1995), Alan Cooper is known for Visual Basic, making A and D correct.