CIS 1057 Chapter Notes - Chapter 1: Solid-State Drive, Volatile Memory, High-Level Programming Language
30 Oct 2018
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Document Summary
Memory that is erased when the power supply is removed. Random access memory (ram) (fast memory that stores data for running programs + the programs, can be written to in random order) Memory that is retained when the power supply is removed. Memory that is directly accessed by the processor (e. g. ram, rom, registers) Memory that is not directly accessed by the processor (e. g. hdd, ssd, cd/dvd) Data is stored in patterns of 0s and 1s in a system called binary. A binary digit is called a bit and can be either off (0) or on (1) 1 byte is enough to store the binary representation of 1 character. Binary numbers can be used to represent many data types. Software is the collection of instructions which are stored in memory and executed by the processor (cpu) Instructions must be written in the language of the processor.
