Tag: science & technology

The candela (cd) is the SI base unit for luminous intensity, which measures the power of light emitted in a particular direction. Luminance (option D) is different - it's luminous intensity per unit area. Magnetism and combustion rate are unrelated to the candela.

A pulsar is indeed a highly magnetized, rotating neutron star that emits beams of electromagnetic radiation from its magnetic poles. These beams are observed as regular pulses when they sweep past Earth, hence the name 'pulsating star'. Quasars are different - they're active galactic nuclei, not neutron stars.

Analog computers are specialized for specific tasks like industrial control, instrumentation, and scientific measurements. They process continuous physical signals (voltage, temperature) rather than digital data. They are NOT designed for general-purpose computation, information storage, or data transmission - those are digital computer functions.

Charles Babbage is widely regarded as the 'father of the computer' for designing the Difference Engine (1822) and the Analytical Engine (1837), which introduced concepts like programmability and storage that are fundamental to modern computers. Note: 'Morden' in the question is a typo for 'Modern'.

CDAC (Centre for Development of Advanced Computing) is an Indian organization established in 1988, while ENIAC, EDVAC, and UNIVAC are all early American computers from the 1940s-1950s. The odd one out is CDAC because it's a modern Indian institution, not a vintage computer like the others.

Third generation computers (1965-1971) used Integrated Circuits (ICs), while VLSI (Very Large Scale Integration) technology was introduced in the fourth generation starting around 1971. VLSI allows thousands of transistors on a single chip, far more advanced than the ICs used in third generation systems.

FLOPS (Floating Point Operations Per Second) is indeed the standard unit for measuring supercomputer performance. It counts how many floating-point calculations a computer can perform in one second, making it ideal for comparing computational speed of systems designed for complex mathematical and scientific calculations.