Modern Tech — Set 4
Inventions · आधुनिक तकनीक · Questions 31–40 of 60
Which company developed the first commercial hard disk drive in 1956?
Correct Answer: C. IBM
IBM's RAMAC 305 was the first computer to use a moving-head hard disk drive for data storage. It was the size of two large refrigerators and stored 5 megabytes of data. This innovation replaced magnetic tape for real-time data access.
Who invented the first integrated circuit (IC) in 1958?
Correct Answer: C. Jack Kilby
Jack Kilby developed the first working IC while working at Texas Instruments. Robert Noyce independently developed a similar version using silicon shortly after. This breakthrough allowed multiple electronic components to be placed on a single chip.
What was the name of the first satellite launched into space in 1957?
Correct Answer: A. Sputnik 1
Sputnik 1 was launched by the Soviet Union and marked the beginning of the Space Age. It was a small polished metal sphere with four radio antennas. Its successful orbit triggered the space race between the USA and the USSR.
Who invented the World's first computer with a stored-program architecture in 1948?
Correct Answer: A. Freddie Williams and Tom Kilburn
The correct answer is 'Freddie Williams and Tom Kilburn'. The Manchester Baby was the first computer to store both data and programs in its electronic memory. It was built at the University of Manchester. This architecture is the basis for almost all computers used today.
Which year was the first domain name, symbolics.com, registered?
Correct Answer: C. 1985
Symbolics.com was registered on March 15, 1985, by a computer systems company. At that time, the internet was mostly used by researchers and universities. This marked the birth of the commercial internet we know today.
Who is the inventor of the first practical steam engine, which powered early industry?
Correct Answer: B. Thomas Newcomen
Thomas Newcomen invented the atmospheric engine in 1712 to pump water out of mines. James Watt later significantly improved its efficiency. This technology provided the mechanical power for the Industrial Revolution.
Which company developed the first handheld GPS receiver in 1989?
Correct Answer: A. Magellan
The Magellan NAV 1000 was the first commercial handheld GPS unit available to the public. It allowed hikers and sailors to determine their location using satellites. Before this, GPS technology was strictly reserved for military use.
Who is credited with inventing the first compiler for a computer in 1952?
Correct Answer: C. Grace Hopper
Grace Hopper developed the A-0 System, which translated mathematical code into machine language. She also played a major role in the development of the COBOL programming language. She is famously associated with the term 'debugging'.
Which technology, released in 2009, introduced the concept of decentralized digital currency?
Correct Answer: D. Bitcoin
Bitcoin was created by an anonymous person or group using the pseudonym Satoshi Nakamoto. it uses blockchain technology to allow peer-to-peer payments without a central bank. It sparked a global interest in cryptocurrencies.
Who invented the first usable light bulb using a carbon filament in 1879?
Correct Answer: A. Thomas Edison
Thomas Edison created a long-lasting electric light bulb after testing thousands of materials. He also built the first power grid to distribute electricity to homes. His work helped transition the world from gas lamps to electric lighting.