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# Most computers are digital, meaning they display information

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Manager
Joined: 27 Jul 2011
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Most computers are digital, meaning they display information  [#permalink]

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Updated on: 16 Apr 2013, 10:49
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Question Stats:

24% (01:39) correct 76% (01:26) wrong based on 17

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Most computers are digital, meaning they display information in discrete intervals, as the relevant values and quantities are calculated in greater or smaller increments. Analog computers instead use the continuous change of natural (or at least physical) phenomena to model and represent calculations as they occur, without piecewise division. Slide rules and
astrolabes are comparatively primitive forms of analog computer; the other end of the spectrum boasts contraptions like the differential analyzer, which uses wheels and discs to solve differential equations, and the gun director, which uses trigonometry to calculate data about a moving target and relay it to a weapon operator.

One of the more remarkable analog computers is the Phillips Hydraulic Computer, also known as the Financephalograph and as the MONIAC (Monetary National
Income Analogue Computer), created in 1949 by New Zealand economist William Phillips, then a student at the London School of Economics. In essence, the MONIAC uses fluidics—where compressible media mimic operations performed by electronics—to simulate a nation’s economic processes, in this case those of the United Kingdom. It comprises a series of plastic tanks and pipes mounted to a wooden board, each tank standing for a discrete economic element; water is used to represent money, such that controlling its flow to and
from different tanks, by use of various taps and pumps, models the holistic effect of each transaction. If water is released from the “treasury” tank and directed to a lower “health care” tank, the changes caused in equilibrium throughout the entire system can be monitored continuously. Phillips found that the MONIAC could be calibrated to an impressive degree of accuracy, which in turn made it an eminently serviceable economic simulator, anticipating as it did most modern modeling software.
According to the passage, the MONIAC:
A. Predated the invention of computerized economic simulations
B. Was used as an economic prediction engine until replaced by software
C. Was created for an assignment at the London School of Economics
D. Could not have been built without funding from the English government
E. Was initially conceived as a theoretical simulation device

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Originally posted by BukrsGmat on 09 Dec 2012, 23:17.
Last edited by BukrsGmat on 16 Apr 2013, 10:49, edited 2 times in total.
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Senior Manager
Joined: 07 Nov 2012
Posts: 296
Schools: LBS '14 (A)
GMAT 1: 770 Q48 V48
Re: Most computers are digital, meaning they display  [#permalink]

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10 Dec 2012, 05:47
Hi - Answers B and C are the same...
Manager
Joined: 27 Jul 2011
Posts: 162
Re: Most computers are digital, meaning they display  [#permalink]

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10 Dec 2012, 20:21
plumber250 wrote:
Hi - Answers B and C are the same...

My apology for that...updated with correct options...
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Joined: 07 Apr 2012
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Re: Most computers are digital, meaning they display information  [#permalink]

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12 Dec 2012, 21:11
I would go for E. what is the OA?
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Re: Most computers are digital, meaning they display information  [#permalink]

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16 Dec 2012, 17:29
Phillips found that the MONIAC
could be calibrated to an impressive degree of accuracy,

which in turn made it an eminently serviceable economic
simulator
, anticipating as it did most modern modeling
software.

My choice is for A.

Pls post OA
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Joined: 31 Aug 2011
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Re: Most computers are digital, meaning they display information  [#permalink]

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16 Dec 2012, 20:21
A. Predated the invention of computerized economic simulations

No information regarding other economic simutations

B. Was used as an economic prediction engine until replaced by software

No where mentioned whether it was used at all or not forget replacement by another thing

C. Was created for an assignment at the London School of Economics

Philip studied there does not mean whatever he does is an assignment from his school

D. Could not have been built without funding from the English government

why would govt fund this ? if its not in passage

E. Was initially conceived as a theoretical simulation device

atleast philips conceived it this way, some other folks might also have agreed so can take on E

E is my choice . some kudos please . . . .

Phillips found that the MONIAC
could be calibrated to an impressive degree of accuracy,
(35) which in turn made it an eminently serviceable economic
simulator
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Joined: 24 Sep 2012
Posts: 36
Re: Most computers are digital, meaning they display information  [#permalink]

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20 Dec 2012, 21:41
In my opinion,

The correct answers could be among A, B and E

A. Predated the invention of computerized economic simulations
Eliminate.
Phillips found that the MONIAC could be calibrated to an impressive degree of accuracy, which in turn made it an eminently serviceable economic simulator, anticipating as it did most modern modeling software.

This means modern software were also available during that time. Hence not predated.

B. Was used as an economic prediction engine until replaced by software

E. Was initially conceived as a theoretical simulation device
No where it is mentioned that it was initially thought as a theoretical device. Eliminate.

Waiting for OA and Explanation!
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Joined: 25 Mar 2012
Posts: 3
Re: Most computers are digital, meaning they display information  [#permalink]

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20 Dec 2012, 23:21
I think the answer is E. A seems right, but is not supported by the passage. Author, can we have the OA please?
Re: Most computers are digital, meaning they display information &nbs [#permalink] 20 Dec 2012, 23:21
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# Most computers are digital, meaning they display information

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