Computer Pioneers — Set 5
Inventions · कंप्यूटर अग्रदूत · Questions 41–50 of 50
Who is known for creating the first spreadsheet program, VisiCalc?
Correct Answer: C. Dan Bricklin
• **Dan Bricklin** = is known for creating the first spreadsheet program, VisiCalc. • **Apple II** — The program helped this personal computer become a massive commercial success by demonstrating its business utility. • 💡 Wrong-option analysis: Steve Jobs: co-founder of Apple Inc., but not VisiCalc creator; Mitch Kapor: co-founder of Lotus Development Corporation, which created Lotus 1-2-3 (a later spreadsheet); Bill Atkinson: key member of Apple's Macintosh team and QuickDraw developer.
Which computer pioneer co-founded Intel and is known for the Silicon Valley nickname?
Correct Answer: A. Robert Noyce
• **Robert Noyce** = co-founded Intel and is known for the Silicon Valley nickname. • **'the Mayor of Silicon Valley'** — He was often called this for his influence on the region's tech culture and his work making mass production of microchips possible. • 💡 Wrong-option analysis: Gordon Moore: co-founder of Intel and known for Moore's Law; Andy Grove: former CEO and chairman of Intel; David Packard: co-founder of Hewlett-Packard.
Who designed the first microprocessor, the Intel 4004, in 1971?
Correct Answer: D. Federico Faggin
• **Federico Faggin** = designed the first microprocessor, the Intel 4004, in 1971. • **Intel 4004** — He led the team that physically designed and implemented the silicon-gate technology for this invention, allowing a single chip to act as a computer's CPU. • 💡 Wrong-option analysis: Jack Kilby: co-inventor of the integrated circuit; Ted Hoff: provided the initial architectural concept for the 4004; Robert Noyce: co-founder of Intel and co-inventor of the integrated circuit.
Who developed the first mouse and demonstrated it in 1968?
Correct Answer: D. Douglas Engelbart
• **Douglas Engelbart** = developed the first mouse and demonstrated it in 1968. • **'The Mother of All Demos'** — His groundbreaking demonstration showcased the mouse along with video conferencing and word processing for the first time. • 💡 Wrong-option analysis: Bill English: helped Engelbart build the first mouse prototype; Steve Jobs: co-founder of Apple Inc. and later popularized the mouse in personal computing; Alan Kay: pioneering computer scientist known for object-oriented programming and GUI concepts.
Which pioneer developed the first laptop computer, the GRiD Compass, in 1982?
Correct Answer: A. Bill Moggridge
• **Bill Moggridge** = developed the first laptop computer, the GRiD Compass, in 1982. • **'clamshell' design** — He designed the GRiD Compass, which was the first computer to use this now-standard design. • 💡 Wrong-option analysis: Michael Dell: founder of Dell Technologies; Adam Osborne: creator of the Osborne 1, an early portable computer (not a laptop); Jeff Hawkins: founder of Palm Computing and Handspring.
Who is the creator of the C++ programming language?
Correct Answer: C. Bjarne Stroustrup
• **Bjarne Stroustrup** = He created the C++ programming language at Bell Labs as an extension of the C language. • **C language** — C++ was designed as an extension of C, adding object-oriented features. • 💡 Wrong-option analysis: [Dennis Ritchie]: He is known for creating the C programming language and co-creating Unix; [Linus Torvalds]: He is the creator of the Linux kernel; [Ken Thompson]: He is a pioneer of Unix and co-created the Go programming language.
Who founded the first computer company, the Electronic Control Company, in 1946?
Correct Answer: D. Mauchly and Eckert
• **Mauchly and Eckert** = John Mauchly and J. Presper Eckert founded the Electronic Control Company, the first computer company. • **1946** — This was the year the Electronic Control Company was founded after building ENIAC. • 💡 Wrong-option analysis: [Jobs and Wozniak]: They co-founded Apple Inc. and are known for the Apple I and Apple II computers; [Hewlett and Packard]: They founded HP (Hewlett-Packard), a prominent electronics and computer company; [Watson and Crick]: They are known for discovering the structure of DNA, not for computer companies.
Who is the pioneer behind the invention of the Hard Disk Drive in 1956?
Correct Answer: D. Reynold Johnson
• **Reynold Johnson** = He led the IBM team that invented the Hard Disk Drive in 1956. • **1956** — This was the year Reynold Johnson's team at IBM introduced the first Hard Disk Drive with the RAMAC 305. • 💡 Wrong-option analysis: [Seymour Cray]: He was a supercomputer architect, known as the 'father of supercomputing'; [Gordon Moore]: He co-founded Intel and is known for Moore's Law, not for HDD invention; [Alan Shugart]: He was an American engineer known for his work on floppy disk drives, not the original HDD.
Who is credited with inventing the first GUI-based personal computer, the Xerox Alto?
Correct Answer: D. Alan Kay
• **Alan Kay** = He and his team at Xerox PARC designed the Xerox Alto, the first GUI-based personal computer. • **1973** — This was the year Alan Kay and his team designed the Xerox Alto with features like a mouse, windows, and icons. • 💡 Wrong-option analysis: [Douglas Engelbart]: He invented the computer mouse and developed early hypertext; [Bill Gates]: He co-founded Microsoft and is known for MS-DOS and Windows operating systems; [Steve Jobs]: He co-founded Apple Inc. and introduced the Apple Macintosh, inspired by the Alto.
Who is the pioneer behind the invention of the e-mail symbol '@'?
Correct Answer: B. Ray Tomlinson
• **Ray Tomlinson** = He invented the e-mail symbol '@' and sent the first network email. • **1971** — This was the year Ray Tomlinson sent the first network email on ARPANET, using the '@' symbol. • 💡 Wrong-option analysis: [Larry Page]: He co-founded Google and is known for search engine development; [Vint Cerf]: He is often called one of the 'fathers of the Internet' for his work on TCP/IP; [Tim Berners-Lee]: He is credited with inventing the World Wide Web.