 Physics Help Forum How many calculations can this processor perform in a second?
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 Electricity and Magnetism Electricity and Magnetism Physics Help Forum Jan 27th 2010, 03:27 PM #1 Junior Member   Join Date: Jan 2010 Posts: 1 How many calculations can this processor perform in a second? The semiconductor chip at the heart of a personal computer is a square 4 mm on a side and contains 10^9 electronic components. If each component is a square, what is the distance across each component? (this part was easy... it was 1 x 10^-4 mm) If a calculation requires that electrical impulses traverse 10^4 elements on the chip, each a million times, how many such calculations can the computer perform each second? The maximum speed of an electrical impulse is close to the speed of light, 3 x 10^8 m/s The second part of the question is what has me confused. I've submitted the answers 3 x 10^11 and 3 x 10^15, both of which are wrong. Any ideas on this? My attempted solution was as follows: c = 3 x 10^8 m/s (3 x 10^8 m)/(s) x (1)/(1 x 10^-7 m) = 3 x 10^15 Hz Sadly I only have 1 attempt left to submit the correct answer. It's an all-or-nothing point system. Thanks in advance    Aug 31st 2010, 09:22 AM #2 Junior Member   Join Date: Aug 2010 Posts: 1 Can't believe I figured it out! Assuming you've already solved Part A, you should already know that each component measures 1×10^-4 mm. (1×10−4 mm) × (1×10^4 components) = 1 1 × 1,000,000 times = 1×10^6 mm Now we know the total distance the electrical impulses have to go is 1×10^6 mm. We will then use Conversion Factors to find out answer: (1.0calcs)/(1.0×10^6mm) × (3.0×10^8m)/(1.0sec) × (1000mm)/(1.0m) The answer you are left with is: 3×10^5 calculations/second ~pwnage   Tags calculations, perform, processor Thread Tools Show Printable Version Email this Page Display Modes Linear Mode Switch to Hybrid Mode Switch to Threaded Mode Similar Physics Forum Discussions Thread Thread Starter Forum Replies Last Post Azureilai Kinematics and Dynamics 1 Dec 3rd 2012 12:46 AM Paul46 Electricity and Magnetism 4 Sep 26th 2009 08:38 AM Fairydust07 General Physics 1 Apr 19th 2009 07:03 PM Rita Vig General Physics 4 Oct 24th 2008 11:40 PM firemonkey Advanced Mechanics 1 Aug 29th 2008 07:20 PM 