CS100 Study Guide - Final Guide: Semicolon, Modulation, Simple Mail Transfer Protocol
6 Apr 2016
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All values are reduced to either true or false. Secondary storage low capacity - few gigabytes high capacity - few terabytes signiicantly faster relatively slow. Cpu can directly access primary memory needs to be copied to primary memory temporary secure and permanent: the cpu/processor fast, basic operations (logic, arithmetic) each with own machine language (but all intels can communicate) 5 key characteristics: make & model, speed, number of cores, power consumption, cache, primary memory aka ram (cannot be accessed directly) cleared when computer is turned of. Secondary storage hard drive, lash drive, contains os, programs, etc: peripherals hardware other than cpu: monitor, mouse, game controller, speaker, microphone, camera, graphics processing unit (gps), wifi. Event based ~ the driver collects information from the peripheral (e. g. mouse) and tells the cpu to take an action (wastes battery) Polling based ~ (common) ~ the operating system turns to the peripheral when it needs to collect information (your camera isn"t always on)
