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29 Oct 2008, 12:05
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SOURCE : MGMAT CAT
In the past decade, rapid technological progress and a greater demand for high-quality digital imaging have led to dramatic advances in video display technology. The dominant technology currently used in most consumer product displays is the active matrix liquid crystal diode display(LCD).
LCDs apply thin-film transistors (TFTs) of amorphous or polycrystalline silicon sandwiched between two glass plates. The TFTs supply voltage to liquid-crystal-filled cells, or pixels, between the sheets of glass. When hit with an electric charge, the liquid crystals untwist to an exact degree to filter white light generated by a lamp. This filtered light shines directly on the viewing screen or, in the case of projection televisions, is projected through a small chip that acts as a lens. LCDs that are capable of producing color images, such as in televisions and computers, reproduce colors through a process of subtraction, blocking out particular color wavelengths from the spectrum of white light until only the desired color remains. It is the variation of the intensity of light permitted to pass through the matrix of liquid crystals that enables LCD displays to present images full of gradations of different colors.
The nature and functioning of LCD displays present many advantages relative to other display technologies. The amount of power required to untwist the crystals to display images, even dark ones, is much lower than that required for analogous processes using other technologies, such as plasma. The dense array of crystals displays images from computer or other video graphics sources extremely well, with full color detail, no flicker, and no screen burn-in. Moreover, the number of pixels per square inch on an LCD display is typically higher than that for other display technologies, so LCD monitors are particularly good at displaying large amounts of data with exceptional clarity and precision. As a result, LCD TVs are considered the best display platform for video games, high definition television, movie special effects, and other graphics-intensive uses.
Q1) The tone of the passage could best be described as
A) supportive advocacy
B) historical discussion
C) objective explanation
D) intellectual exploration
E) qualified support
Q2)The process through which an LCD monitor displays different colors is most closely analogous to
A) an hourglass partially blocked such that a limited stream of grains of sand fall into the lower portion
B) a series of filters that separate all of the components of a mixture according to size
C) a recording studio soundproofed so that any performances within are muted to those outside
D) a piece of construction paper with outlines of characters cut out such that a lamp in front of the paper casts shadows in the shapes of the characters
E) an air vent that emits warmer air outside of a building while an air conditioning system cools the interior of the building
Q3) The passage indicates that each of the following may be considered an advantage of LCD displays relative to other display technologies EXCEPT
A) they consume less power
B) they generally have more pixels per square inch of the display
C) they are able to display continuous video graphics images with no interruption
D) they reflect a widely adopted standard
E) they represent the latest, most advanced technology
In the past decade, rapid technological progress and a greater demand for high-quality digital imaging have led to dramatic advances in video display technology. The dominant technology currently used in most consumer product displays is the active matrix liquid crystal diode display(LCD).
LCDs apply thin-film transistors (TFTs) of amorphous or polycrystalline silicon sandwiched between two glass plates. The TFTs supply voltage to liquid-crystal-filled cells, or pixels, between the sheets of glass. When hit with an electric charge, the liquid crystals untwist to an exact degree to filter white light generated by a lamp. This filtered light shines directly on the viewing screen or, in the case of projection televisions, is projected through a small chip that acts as a lens. LCDs that are capable of producing color images, such as in televisions and computers, reproduce colors through a process of subtraction, blocking out particular color wavelengths from the spectrum of white light until only the desired color remains. It is the variation of the intensity of light permitted to pass through the matrix of liquid crystals that enables LCD displays to present images full of gradations of different colors.
The nature and functioning of LCD displays present many advantages relative to other display technologies. The amount of power required to untwist the crystals to display images, even dark ones, is much lower than that required for analogous processes using other technologies, such as plasma. The dense array of crystals displays images from computer or other video graphics sources extremely well, with full color detail, no flicker, and no screen burn-in. Moreover, the number of pixels per square inch on an LCD display is typically higher than that for other display technologies, so LCD monitors are particularly good at displaying large amounts of data with exceptional clarity and precision. As a result, LCD TVs are considered the best display platform for video games, high definition television, movie special effects, and other graphics-intensive uses.
Q1) The tone of the passage could best be described as
A) supportive advocacy
B) historical discussion
C) objective explanation
D) intellectual exploration
E) qualified support
Q2)The process through which an LCD monitor displays different colors is most closely analogous to
A) an hourglass partially blocked such that a limited stream of grains of sand fall into the lower portion
B) a series of filters that separate all of the components of a mixture according to size
C) a recording studio soundproofed so that any performances within are muted to those outside
D) a piece of construction paper with outlines of characters cut out such that a lamp in front of the paper casts shadows in the shapes of the characters
E) an air vent that emits warmer air outside of a building while an air conditioning system cools the interior of the building
Q3) The passage indicates that each of the following may be considered an advantage of LCD displays relative to other display technologies EXCEPT
A) they consume less power
B) they generally have more pixels per square inch of the display
C) they are able to display continuous video graphics images with no interruption
D) they reflect a widely adopted standard
E) they represent the latest, most advanced technology
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29 Oct 2008, 13:22
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Q1) The tone of the passage could best be described as
A) supportive advocacy – Eliminate: the author doesn’t argue for one technology over another.
B) historical discussion – Eliminate: there is no discussion of the evolution of LCDs.
C) objective explanation – Keep as contender.
D) intellectual exploration – Eliminate: information is merely presented. I believe the author’s language would have to be stronger to support this a.c.
E) qualified support – My choice. The author presents a claim (LCDs are the dominant type of display) and supports it with examples (advantages).
Q2)The process through which an LCD monitor displays different colors is most closely analogous to...
Prephrase – process of subtraction – selectively permitting light to pass through to achieve a desired result.
A) an hourglass partially blocked such that a limited stream of grains of sand fall into the lower portion – Contender – Eliminate b/c it merely discusses a blockage without consideration for the end result.
B) a series of filters that separate all of the components of a mixture according to size – Eliminate: too strong “all”.
C) a recording studio soundproofed so that any performances within are muted to those outside – Eliminate: too strong “any”
D) a piece of construction paper with outlines of characters cut out such that a lamp in front of the paper casts shadows in the shapes of the characters: My choice – “Selectively blocks (cut out of shapes) and allows for an outcome (specific shape)”.
E) an air vent that emits warmer air outside of a building while an air conditioning system cools the interior of the building: Eliminate: subjective, how would we classify “warmer” and “cooler”? Not clear cut.
Q3) The passage indicates that each of the following may be considered an advantage of LCD displays relative to other display technologies EXCEPT
A) they consume less power – Eliminate: “the amount of power is much lower”
B) they generally have more pixels per square inch of the display – Eliminate: “number of pixels is typically higher”
C) they are able to display continuous video graphics images with no interruption – Eliminate: “no flicker”
D) they reflect a widely adopted standard - tricky.... "the best for high graphics applications"
E) they represent the latest, most advanced technology – tricky...I chose this a.c.
This one was a toss-up between D and E. Both seem like one needs to make an inference from the information. I chose E because of its language (i.e. "most advanced technology"). This is subjective. What if plasma technology is more advanced and that it just has a few less desirable traits?
P.S. This is my first attempt! I was a former LSAT taker, so I hope my RC skills are still intact.
A) supportive advocacy – Eliminate: the author doesn’t argue for one technology over another.
B) historical discussion – Eliminate: there is no discussion of the evolution of LCDs.
C) objective explanation – Keep as contender.
D) intellectual exploration – Eliminate: information is merely presented. I believe the author’s language would have to be stronger to support this a.c.
E) qualified support – My choice. The author presents a claim (LCDs are the dominant type of display) and supports it with examples (advantages).
Q2)The process through which an LCD monitor displays different colors is most closely analogous to...
Prephrase – process of subtraction – selectively permitting light to pass through to achieve a desired result.
A) an hourglass partially blocked such that a limited stream of grains of sand fall into the lower portion – Contender – Eliminate b/c it merely discusses a blockage without consideration for the end result.
B) a series of filters that separate all of the components of a mixture according to size – Eliminate: too strong “all”.
C) a recording studio soundproofed so that any performances within are muted to those outside – Eliminate: too strong “any”
D) a piece of construction paper with outlines of characters cut out such that a lamp in front of the paper casts shadows in the shapes of the characters: My choice – “Selectively blocks (cut out of shapes) and allows for an outcome (specific shape)”.
E) an air vent that emits warmer air outside of a building while an air conditioning system cools the interior of the building: Eliminate: subjective, how would we classify “warmer” and “cooler”? Not clear cut.
Q3) The passage indicates that each of the following may be considered an advantage of LCD displays relative to other display technologies EXCEPT
A) they consume less power – Eliminate: “the amount of power is much lower”
B) they generally have more pixels per square inch of the display – Eliminate: “number of pixels is typically higher”
C) they are able to display continuous video graphics images with no interruption – Eliminate: “no flicker”
D) they reflect a widely adopted standard - tricky.... "the best for high graphics applications"
E) they represent the latest, most advanced technology – tricky...I chose this a.c.
This one was a toss-up between D and E. Both seem like one needs to make an inference from the information. I chose E because of its language (i.e. "most advanced technology"). This is subjective. What if plasma technology is more advanced and that it just has a few less desirable traits?
P.S. This is my first attempt! I was a former LSAT taker, so I hope my RC skills are still intact.
29 Oct 2008, 20:52
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Ahhh...okay. I now think I understand why it's not qualified support.... because it would have to present more than one option.
Some people argue that (fill in alternative technology) is superior to LCDs. However, LCDs are the most superior for applications that require high graphical demands.
In other words, qualified support requires stronger authorial language (ex: thesis passage).
Thanks for the inquiry!
Some people argue that (fill in alternative technology) is superior to LCDs. However, LCDs are the most superior for applications that require high graphical demands.
In other words, qualified support requires stronger authorial language (ex: thesis passage).
Thanks for the inquiry!
