FIT1047 Lecture Notes - Lecture 4: External Storage, Wi-Fi, Processor Register
12 Jun 2018
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Document Summary
= a sequence of locations, each of which has an address (consecutive integers, usually starting frm zero) Each location can store 1 data value of a fixed width (number of bits) = an unsigned integer that references 1 unique memory location. Each memory location stores 1b, therefore each location & byte needs its own address. Each memory location stores 1 word, thus each address references a whole word. = word-addressable memory (marie : 1 word = 16 bits/2b wide) In order to address 2n memory locations, we always need n bits for the addresses. In byte-addressed systems, no. of locations = no. of bytes. In word-addressed systems, no. of locations = no. of words. = allows cpu to access any memory location in same amount of time. 2k * 8 = 8 2 * 210 locations of 8 bits each. To find ram chip to used when a given address is requested, split address into 2 parts.
