Comparison of instruction set architectures: Difference between revisions

Revision as of 21:05, 28 May 2024

Revision as of 15:43, 4 October 2024

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Characters are encoded as strings of bits or digits, using a wide variety of character sets; even within a single manufacturer there were character set differences.

Integers are encoded with a variety of [[Signed number representations|representations]], including [[Signed number representations#Sign_magnitude|Sign_magnitudeSign-magnitude]], [[Signed number representations#Ones' complement|Ones' complement]], [[Signed number representations#Two's complement|Two's complement]], [[Signed number representations#Offset binary|Offset binary]], [[Method of complements#Numeric complements|Nines' complement]] and [[Method of complements#Numeric complements|Ten's complement]].

Similarly, floating point numbers are encoded with a variety of representations for the sign, [[exponent#In programming languages|exponent]] and [[Significand|mantissa]]. In contemporary machines [[IBM hexadecimal floating-point]] and [[IEEE 754]] floating point have largely supplanted older formats.