Comments by "Bob Roberts" (@bobroberts2371) on "Asianometry" channel.

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  17. James Bruce said " When car companies quote their numbers they include multiple different copies of embedded Linux, despite the fact that it is (a) worse than having a single common copy " In the automotive environment, various modules do their own thing and only share data not lines of code / processor time. For example, the radio looks at vehicle speed from the ABS system so volume can be raised to compensate for increased background noise. Using one copy of embedded Linux on a singular module would not work. ( unless you are speaking of multiple copies in a single module, maybe this being done to get around limited scan time? ) As for the question " . . . 100 embedded processors in their machines with almost identical code ? Do you count the lines once, or 100 times ? " Id say count the lines 100 times because if some of these lines of code were removed from a single module ( in the automotive environment example ) the system would not operate. I consider a line of code as critical as physical " hard parts ". Something else to consider, the number of lines of code is just to give non technical people * some grasp of the scale of the machine. Telling someone that the machine runs at 400 Mhz is somewhat intangible as many don't have a frame of reference. Tell these same people that there are XXX number of lines of computer code and they can picture phone books stacked as high as a 100 story building. * Non technical people as in, they are not programmers or chip designers but perhaps skilled in the art of manufacturing computer chips.
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