A digit is in a position i which in turn determines its weight. A base-B positional numeral system represents numbers with digits that can have values from 0 to B-1 (from 0 to 1 for binary from 0 to 9 for decimal, etc.), and they are written one after the other. The binary system is a base-2 positional numeral system. If you think that this is too basic you can go straight to the heart of the issue clicking here.įirst we have to see what the binary code is and my elaboration will be focused on using binary to represent numbers. By the way, let me clarify that what goes next is quite simple, but fun.įirst I will briefly explain some concepts about binary. And all due to a programming absent-mindedness and to the behavior of binary arithmetic. In this game, it was possible to go from having 1 life to enjoy 255 lives. Sinistar’s glitch got my attention, and it seemed handy to explain two’s complement arithmetic, which is essential in the digital systems domain. glitches) in arcade videogames: Asteroids (Atari), Donkey Kong (Nintendo), Sinistar (Williams Electronics), Ms. Some time ago, I came across a fantastic video published by the IEEE Spectrum Magazine ( Five Infamous Arcade-Game Glitches), devoted to programming mistakes (i.e. There is nothing like finding an arguably fun example to support any of the arid concepts populating the fields of digital electronics, computing and signal processing.
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