Computer Fundamental Miscellaneous - Study Mode

[#486] Who is credited with the idea of using punch cards to control patterns in a weaving machine?
Correct Answer

(D) Jacquard

Explanation

Solution: The Jacquard machine is a device fitted to a power loom that simplifies the process of manufacturing textiles with such complex patterns as brocade, damask and matelasse. The loom was controlled by a "chain of cards"; a number of punched cards laced together into a continuous sequence.

[#487] Which 32-bit microprocessor is used in IBM's PS/2 model-80 computer?
Correct Answer

(C) 80386

Explanation

Solution: The IBM Personal System/2 Model 80 (IBM 8580) enhances the System/2 family of systems by offering a new level of performance in personal computing for both commercial and compute-intensive environments. This system is highlighted by the new Micro Channel (TM) Architecture with a 16MHz 80386 32-bit microprocessor, high-density memory technology, and a wide range of integrated features.

[#488] The memory which is ultraviolet light erasable and electrically programmable is
Correct Answer

(D) EPROM

Explanation

Solution: An EPROM or erasable programmable read-only memory, is a type of memory chip that retains its data when its power supply is switched off. Computer memory that can retrieve stored data after a power supply has been turned off and back on is called non-volatile. It is an array of floating-gate transistors individually programmed by an electronic device that supplies higher voltages than those normally used in digital circuits. Once programmed, an EPROM can be erased by exposing it to strong ultraviolet light source (such as from a mercury-vapor light). Source : wikipedia.org

[#489] What is the name of the computer which was first used for programming and playing of music?
Correct Answer

(A) ELLIAC

Explanation

Solution: ELLIAC is the name of the computer which was first used for programming and playing of music. Mathematician Geoff Hill programmed the CSIRAC to play popular musical melodies from the very early 1950s. In 1950 CSIRAC was used to play music, the first known use of a digital computer for the purpose. The music was never recorded, but it has been accurately reconstructed.

[#490] The access method used for cassette tape is
Correct Answer

(C) Sequential

Explanation

Solution: Sequential Access. The standard method for accessing files and devices is the sequential method. It can be like a cassette tape that rewinds itself after every use.