Information Technology, the Internet, and You Flashcards
What is Software?
purpose is to convert data(unprocessed facts) into information (processed facts).
Tells computer how to do its work.
System Software
Enables application software to interact with computer hardware. “Background” software helps computer manage own internal resources.
Types of system software
Operating Systems and Utilities
Operating Systems
Coordinates computer resources, provide interface between users and computer, and run applications.
Types of Operating Systems
Embedded operating systems (mobile devices), stand-alone operating systems(windows 10/macOS), network operating systems(networks)
Utilities
Perform specific tasks related to managing computer resources (antivirus programs)
Application Software
End-user software
Types of Application Software
General-purpose, specialized, apps
General-purpose applications
Widely used. Includes word processors, spreadsheets, etc.
Specialized applications
Focus on specific disciplines and occupations
Mobile applications
Small programs primarily designed for mobile devices
Hardware
Equipment that processed data to create information. Controlled by software to follow instructions to accept input, process input, and produce information
Types of computers
Super computers, Mainframe computers, Midrange computers, Personal computers
Super computers
Most powerful type of computer. Used by large organizations to process massive amounts of data.
Mainframe computers
In specially wire, air-conditioned rooms. Not as powerful as supercomputers. Still capable of great processing speeds and data storage.
Midrange computers (Servers)
Processing capabilities less powerful than a mainframe but better than personal computer. Used to support or serve end users for specific needs.
Personal Computer
Least powerful, widely used, fastest growing. Desktops, laptops, tablets, smartphones, and wearables.
Personal Computer Hardware
System unit, input/output, Secondary storage, communication
System Unit (PC)
Houses most of electronic components. Two important components: Microprocessors and memory
Microprocessors (PC)
controls and manipulates data to produce information.
Memory (PC)
Holding area for data, instructions, and information.
Random-access memory (RAM)
Holds program and data currently being processed. Sometimes referred as temporary storage (contents will typically be lost if power is lost).
Input
Translate data and programs that humans understand to a form that computers can process. Mouse and Keyboard.
Output
Translate processed information from computer to form humans can understand. Monitor.