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An error-tolerant design (or human-error-tolerant design [1]) is one that does not unduly penalize user or human errors. It is the human equivalent of fault tolerant design that allows equipment to continue functioning in the presence of hardware faults, such as a "limp-in" mode for an automobile electronics unit that would be employed if ...
The only thing constant is change. This is certainly more true of software systems than almost any phenomenon, [6] not all software change in the same way so software fault tolerance methods are designed to overcome execution errors by modifying variable values to create an acceptable program state. [7]
There is a difference between fault tolerance and systems that rarely have problems. For instance, the Western Electric crossbar systems had failure rates of two hours per forty years, and therefore were highly fault resistant. But when a fault did occur they still stopped operating completely, and therefore were not fault tolerant.
The formula calculator concept can be applied to all types of calculator, including arithmetic, scientific, statistics, financial and conversion calculators. The calculation can be typed or pasted into an edit box of: A software package that runs on a computer, for example as a dialog box. An on-line formula calculator hosted on a web site.
Consider , the exact solution to a differential equation in an appropriate normed space (, | | | |). Consider a numerical approximation u h {\displaystyle u_{h}} , where h {\displaystyle h} is a parameter characterizing the approximation, such as the step size in a finite difference scheme or the diameter of the cells in a finite element method .
Simpler to program, requires less computer time per step, and works well with multigrid acceleration techniques; Has a free parameter in conjunction with the fourth-difference dissipation, which is needed to approach a steady state. More accurate than the first-order upwind scheme if the Peclet number is less than 2. [3]
HP 48G calculator, uses RPL RPL [5] is a handheld calculator operating system and application programming language used on Hewlett-Packard 's scientific graphing RPN (Reverse Polish Notation) calculators of the HP 28 , 48 , 49 and 50 series, but it is also usable on non-RPN calculators, such as the 38 , 39 and 40 series.
Ackermann's formula provides a direct way to calculate the necessary adjustments—specifically, the feedback gains—needed to move the system's poles to the target locations. This method, developed by Jürgen Ackermann , [ 2 ] is particularly useful for systems that don't change over time ( time-invariant systems ), allowing engineers to ...