ENG1003 Lecture Notes - Lecture 11: Memory Address, Multi-Core Processor, Electromagnet
30 May 2018
School
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Document Summary
Bit (binary digit) = smallest unit of info, stores just a single 0/1. Can store any unsigned integer frm 0-255 (28 = 256) Size depends on architecture of processor (aka brains of computer responsible for executing instructions) kb, mb, gb, tb most commonly used (3, 6, 9, 12 respectively) Devised to disambiguate between powers-of-1000 and powers- of-1024. Processor calculates w/ binary arithmetic when executing arithmetic instruction. 1 + 1 = 0 and 1 is carried forward. If binary digits represent -ve number, use two"s complement representation, then add. Flip bits (0 --> 1, 1 --> 0) and add 1 (to final digit! Standard representation that computers use for -ve numbers, since this allows std arithmetic ops of binary addition, subtractn and multiplication for both +ve and -ve values w/o requiring any special case for -ve values. Multiply each digit of binary number by the corresponding power of.
