Modern Tech — Set 2

Correct Answer: D. Bluetooth

• **Bluetooth** = This technology, invented by Jaap Haartsen, uses radio waves for short-range wireless communication between devices. • **1994** — This was the year Bluetooth was invented, becoming a standard feature in modern electronics. • 💡 Wrong-option analysis: NFC: It is for very short-range communication, but invented later than Bluetooth; Infrared: An older wireless technology primarily used for remote controls, less versatile than Bluetooth; Wi-Fi: It is for longer-range local area networking, not short-range device pairing.

Correct Answer: B. Paul Allen

• **Paul Allen** = He co-founded Microsoft alongside Bill Gates, and is credited with proposing the name 'Micro-Soft'. • **1975** — This was the year Paul Allen and Bill Gates co-founded Microsoft to develop software for early personal computers. • 💡 Wrong-option analysis: Larry Ellison: He co-founded Oracle Corporation, a database software company; Jeff Bezos: He founded Amazon, an e-commerce giant; Steve Ballmer: He was a longtime CEO of Microsoft but not a co-founder.

Correct Answer: D. Archie

• **Archie** = Developed by Alan Emtage, it was the first search engine designed to index FTP archives. • **1990** — This was the year Archie, the first search engine, was created to help users find files on the nascent internet. • 💡 Wrong-option analysis: Altavista: A popular search engine from the mid-1990s, but not the first; Yahoo: Started as a web directory in 1994, not the first search engine; Google: Founded in 1998, much later than Archie.

Correct Answer: B. Computer Mouse

• **Computer Mouse** = Douglas Engelbart demonstrated this first input device, revolutionizing human-computer interaction. • **1964** — This was the year Douglas Engelbart demonstrated the first computer mouse, making computer interaction intuitive. • 💡 Wrong-option analysis: Touchscreen: Developed much later and became common with mobile devices; Joystick: An input device primarily used for gaming, not as fundamental for general computer interaction; Keyboard: While essential, it predates the mouse as a primary input method for interaction, not an invention by Engelbart in 1964.

Correct Answer: C. Charles Babbage

• **Charles Babbage** = He is widely honored as the first computer pioneer, known for his designs of the Difference Engine and the Analytical Engine. • **Analytical Engine** — This machine, designed by Charles Babbage, contained all the essential elements of a modern computer, forming the foundation of computer science. • 💡 Wrong-option analysis: Gottfried Leibniz: A mathematician who developed mechanical calculators, but not the Difference or Analytical Engine; John Napier: Invented Napier's bones, a manual calculating device, not complex engines; Ada Lovelace: She wrote the first algorithm for the Analytical Engine, but Charles Babbage designed the engine itself.

Correct Answer: B. 2007

• **iPhone** = Apple released the first iPhone in 2007, combining a phone, an iPod, and an internet communicator. • **2007** — The launch of the iPhone popularized multi-touch screens and mobile applications, initiating a global shift toward mobile-first technology. • 💡 Wrong-option analysis: [2005]: Too early for the iPhone's launch; [2010]: The iPhone 4 was launched in this year, not the first model; [2004]: Also too early for the first iPhone.

Correct Answer: C. Bob Thomas

• **Bob Thomas** = Bob Thomas wrote 'Creeper' in 1971 as an experimental program that moved between computers on the ARPANET. • **1971** — This year marked the creation of 'Creeper', considered the first computer virus, which led to the development of 'Reaper', the first antivirus software. • 💡 Wrong-option analysis: [John Draper]: Known as Captain Crunch, a famous phone phreaker, not the creator of Creeper; [Robert Morris]: Created the Morris worm in 1988, a significant internet worm; [Kevin Mitnick]: A renowned computer hacker and security consultant, not associated with Creeper's creation.

Correct Answer: C. IBM

• **IBM** = IBM introduced the first mass-produced personal computer, the Model 5150 (IBM PC), which was released in 1981. • **1981** — The IBM PC Model 5150 was released, setting the standard for personal computer architecture and legitimizing its use for business and home. • 💡 Wrong-option analysis: [Tandy]: Produced early personal computers like the TRS-80, but not the IBM PC; [Commodore]: Famous for the Commodore 64, a popular home computer; [Apple]: Launched early personal computers like the Apple II, but not the Model 5150.

Correct Answer: D. John Backus

• **John Backus** = John Backus led the team at IBM that created Fortran, the first high-level programming language, in 1957 for scientific and engineering calculations. • **1957** — The year Fortran (Formula Translation) was developed, making programming significantly easier than assembly language and still used in high-performance computing. • 💡 Wrong-option analysis: [Bjarne Stroustrup]: Developed the C++ programming language; [Grace Hopper]: A pioneering computer scientist who developed the first compiler for a computer programming language; [Dennis Ritchie]: Co-created the Unix operating system and the C programming language.

Correct Answer: C. Blockchain

• **Blockchain** = Blockchain is a decentralized, distributed ledger technology that uses a chain of blocks to store data in a transparent and immutable manner. • **2009** — This year marked the first implementation of blockchain as the underlying technology for Bitcoin, leading to applications in finance, supply chain, and voting systems. • 💡 Wrong-option analysis: [Virtualization]: Creates virtual versions of computing resources, not a chain of blocks; [Cloud Computing]: Delivers on-demand computing services over the internet; [Quantum Computing]: Uses quantum-mechanical phenomena to perform computations, a different field entirely.