Computer Fundamental Miscellaneous - Study Mode
[#626] The invention of the slide rule is attributed to
Correct Answer
(B) Oughtred
Explanation
Solution: The Reverend William Oughtred and others developed the slide rule in the 17 th century based on the emerging work on logarithms by John Napier. Before the advent of the electronic calculator, it was the most commonly used calculation tool in science and engineering.
[#627] The control unit of a microprocessor
Correct Answer
stores data in the memory
Explanation
Solution: The control unit is a component of a computer's central processing unit (CPU) that directs operation of the processor. It tells the computer's memory, arithmetic/logic unit and input and output devices how to respond to a program's instructions.
[#628] A flat-bed plotter uses a pen which moves in two directions across a piece of paper fixed on a flat-bed. Can you tell who controls the movements of this pen?
Correct Answer
(C) film card
Explanation
Solution: A flat-bed plotter uses a pen which moves in two directions across a piece of paper fixed on a flat-bed. Can you tell who controls the movements of this pen in film card.
[#629] The desirable characteristic(s) of a memory system is (are)
Correct Answer
(D) All of the above
Explanation
Solution: The desirable characteristic(s) of a memory system is (are) Speed and reliability, Low power consumption and Durability and compactness. Low power consumption means it will consume low power when operating, ie, it will draw low power to operate.
[#630] The CPU chip used in a computer is partially made out of:
Correct Answer
(D) Silica
Explanation
Solution: A computer chip needs to be built out of a semiconducting material, and most of these chips are indeed built with silicon even though there are other possible materials. The first silicon transistor was created in the 1950's. Transistors can also be made from many other materials.