The University College London now has a computer that is said to never crash. We’ve all experienced it: computers do crash, so what makes this particular one impervious to crash events? To explain that, let’s look at why computer crash to start with: at the highest (and simplest) level, computer programs are a linear sequence of instructions, that are executed in order. If for some reason, the execution stops (divide by zero, memory access fault…), that particular program will crash. Usually the Operating System (OS) can recover from that, and terminate that crashed task. Sometime, the crash takes out the OS itself too (that’s the BSOD or Blue Screen of Death on Windows, and of course other systems experience that too from time to time). (more…)
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