Multiplication operations - PowerPoint PPT Presentation

Arithmetic Logic Unit

Arithmetic Logic Unit. Charles Henry. A.L.U. Behaves like the “calculator” of the C.P.U. John von Neumann proposes A.L.U concept in 1945. F is input command (say + -) A &amp; B are registers used during the operation at hand. Registers.

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Working with ‘bits’

Working with ‘bits’. Some observations on using x86 bit-manipulations. Twos-complement extension. The following are legal statements in C: They illustrate ‘type promotions’ of signed integers having different storage widths. char c = -5; short s = c; int i = s;. ‘sign-extension’.

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176 views • 8 slides

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