Computer Fundamental Miscellaneous - Study Mode

[#386] Which of the following is still useful for adding numbers?
Correct Answer

(C) Abacus

Explanation

Solution: Abacus : An abacus is a manual aid to calculating that consists of beads or disks that can be moved up and down on a series of sticks or strings within a usually wooden frame. The abacus itself doesn't calculate; it's simply a device for helping a human being to calculate by remembering what has been counted.

[#387] The average time necessary for the correct sector of a disk to arrive at the read write head is ________ .
Correct Answer

(C) Rotational delay

Explanation

Solution: Rotational delay : A rotational delay is the amount of time between information requests and how long it takes the hard drive to move to the sector where the requested data is located. In other words, it is a time measurement, in milliseconds (ms), of how long before a rotating drive can transfer data.

[#388] A number that is used to control the form of another number is known as
Correct Answer

(B) Mask

Explanation

Solution: A number that is used to control the form of another number is known as mask.

[#389] A general purpose single-user microcomputer designed to be operated by one person at a time is
Correct Answer

(D) PC

Explanation

Solution: A personal computer is a general-purpose computer whose size, capabilities and original sale price make it useful for individuals and is intended to be operated directly by an end-user with no intervening computer operator.

[#390] ASCII stands for
Correct Answer

(A) American standard code for information interchange

Explanation

Solution: ASCII, abbreviated from American Standard Code for Information Interchange, is a character encoding standard for electronic communication. ASCII codes represent text in computers, telecommunications equipment, and other devices. Most modern character-encoding schemes are based on ASCII, although they support many additional characters.