ITM 301 Lecture Notes - Lecture 1: Computer Hardware, Software, Information Hiding

• School: Ryerson University
• Department: Information Technology Management
• Course: ITM 301
• Professor: Farid Shirazi

Document Summary

Computing system: computer hardware, software, and data, which interact to solve problems. Computer hardware: the physical elements of a computing system. Computer software: the programs that provide the instructions that a computer executes. Information: reflects the way we represent information on a computer. Hardware: physical hardware of a computer system. (includes gates, circuits, etc. ) Instructions used to accomplish computations and manage data. Operating system: to manage the computer"s resources (cid:523)windows xp, linux, mac os(cid:524) Applications: use the computer to solve real-world problems. Communications: computers are connected into network so they can share information and resources. Abstraction = a mental model that removes complex details. Information hiding = a technique for isolating program pieces by eliminating the ability for one piece to access the information in another. Business process (bp): a collection of tasks to be completed in a certain order to achieve the desired business objectives. Algorithms (computer executable workflows): to solve data centric problems.