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61
Which of the following file organizations is most efficient for a file with a high degree of file activity?
Discuss
Answer & Solution
Answer: Option A
Solution:
The sequential file organization is efficient and process faster for the large volume of data. It is a simple file organization compared to other available file organization methods. This method can be implemented using cheaper storage devices such as magnetic tapes.
62
What is the name of the reading device which mades use of photosensors and laser technologies to interpret printed, typed or even hand-written data directly from the source documents?
Discuss
Answer & Solution
Answer: Option B
Solution:
OCR stands for "Optical Character Recognition". It is a technology that recognizes text within a digital image. It is commonly used to recognize text in scanned documents and images. OCR software can be used to convert a physical paper document, or an image into an accessible electronic version with text.
63
A(n) ____ device is any device that provides information which is sent to the CPU.
Discuss
Answer & Solution
Answer: Option A
Solution:
In computing, an input device is a piece of equipment used to provide data and control signals to an information processing system, such as a computer or information appliance. Examples of input devices include keyboards, mouse, scanners, cameras, joysticks, and microphones.
64
The range of frequencies available for data transmission is known as
Discuss
Answer & Solution
Answer: Option B
Solution:
Bandwidth is the difference between the upper and lower frequencies in a continuous band of frequencies. It is typically measured in hertz, and depending on context, may specifically refer to pass band bandwidth or baseband bandwidth.
65
Full adder has
Discuss
Answer & Solution
Answer: Option D
Solution:
Full Adder is the adder which adds three inputs and produces two outputs. The first two inputs are A and B and the third input is an input carry as C-IN. The output carry is designated as C-OUT and the normal output is designated as S which is SUM.
66
Which major development led to the production of microcomputers?
Discuss
Answer & Solution
Answer: Option D
Solution:
Integrated circuits major development led to the production of microcomputers.
An integrated circuit or monolithic integrated circuit (also referred to as an IC, a chip, or a microchip) is a set of electronic circuits on one small flat piece (or "chip") of semiconductor material, usually silicon. Large numbers of tiny MOSFETs integrate into a small chip.
67
The first computer made available for commercial use was
Discuss
Answer & Solution
Answer: Option D
Solution:
UNIVAC, the first commercially produced digital computer, is dedicated. On 14th June 1951, the U.S. Census Bureau dedicates UNIVAC, the first commercially produced electronic digital computer in the United States.
68
In which mode, each user has a local input/output device.
Discuss
Answer & Solution
Answer: Option B
Solution:
Time-sharing, in data processing, method of operation in which multiple users with different programs interact nearly simultaneously with the central processing unit of a large-scale digital computer.
69
Sometime data are gathered over a period of time and collected into a group before entering them into a computer for processing. What type of processing is it called?
Discuss
Answer & Solution
Answer: Option A
Solution:
Sometime data are gathered over a period of time and collected into a group before entering them into a computer for processing is it called an Interactive processing. Interactive processing means that the person needs to provide the computer with instructions whilst it is doing the processing. For example, imagine that a computer is running a program that takes a set of files from one directory and does some work on each one.
70
Which of the following is considered a direct-entry input device?
Discuss
Answer & Solution
Answer: Option E
Solution:
Light pen, mouse, and optical scanner are the examples of direct entry input devices. Among these, mouse is the most common type of input device.