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The exponent is unsigned. It cannot be -1. The smallest it can be is 0, which translates to 2^-127. You might ask then, "If so, how is 2^-128 represented in single precision?!". The answer lies in normalization. Usually numbers are normalized (i.e. multiplied by a power of 2) so that the leading bit of their mantissa is 1. That bit can then be ...


You're mixing things up a bit. You've kind of got the gist of it but not completely. Let's compare General Purpose Microprocessors, Microcontrollers, FPGAs, and ASICs. You've lumped microcontrollers and microprocessors together, when you really shouldn't. General Purpose Microprocessors: These are the desktop and laptop processors, Intel Pentium chips, AMD ...

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