ITEC 1010 Chapter Notes - Chapter 1: Spreadsheet, Data Center, Word Processor

• School: York University
• Department: Information Technology
• Course: ITEC 1010
• Professor: Radu Campeanu

Document Summary

Computer system hardware components include devices that perform the functions of input, processing, data storage and output. Central processing unit (cpu): consists of three primary elements: the arithmetic/logic unit, the control unit and storage registers. Arithmetic/logic unit (alu): performs mathematical calculations and makes logical comparisons. Control unit (cu): sequentially accesses program instructions, decodes them and coordinated the flow of data in and out of the alu, primary storage, and even secondary storage and various output devices. Registers: high-speed storage areas used to temporarily hold small units of program instructions and data immediately before, during and after execution by the cpu. Bus: a set of physical connections that can be shared by multiple hardware components so they can communicate with one another. Primary storage (main memory): holds program instructions and data, is closely associated with the. Processing and memory devices: power and speed capacity. Organizations give a variety of measures to gauge processing speed.