- StudyBlue
- Pennsylvania
- Temple University
- Computer Information Technology
- Computer Information Technology 835
- Forman
- Ch 4. Computer Software
Ch 4. Computer Software
Computer Information Technology 835 with Forman at Temple University
About this deck
By: angelica Allen
Created: 2010-12-10
Size: 36 flashcards
Views: 23
Created: 2010-12-10
Size: 36 flashcards
Views: 23
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Multitasking
allows two or more tasks, jobs, or programs to run simultaneously
Multithreading
allows multiple parts, or threads, to run simultaneously within a single program
User Interfaces
ïThe combination of hardware and software that helps people and computers communicate with each other
DOS
ïDisk Operating System
ïFirst operating system that many used
Tasks of the Kernel
vManages memory and devices
vMaintains computer’s clock
vStarts applications
Assigns resources
Booting
Process of starting or restarting a computer
Steps 1-3 of Booting
Step 1. Power supply sends signal to components in system unit
Step 2. Processor accesses BIOS to start computer
Step 3. BIOS runs tests, called the POST, to check components such as mouse, keyboard, and adapter cards
Steps 4 & 5 of Booting
Step 4. Results of POST are compared with data in CMOS chip
Step 5. BIOS looks for system files in floppy disk drive or CD/DVD drive, and then hard disk
Steps 6 &7 of Booting
Step 6. Kernel (core) of operating system loads into RAM
Step 7. Operating system loads configuration information and displays desktop on screen
BIOS
•Basic Input/Output System
•Contains computer’s startup instructions
•Maintains computer’s clock
•Controls how hardware and OS communicate
POST: power-on self test
POST (power on self test)
•Series of tests to make sure the hardware is connected properly and operating correctly
Does not guarantee a perfectly working system
Registry
several files that contain system configuration information
App Software
ïIntended to help make users more efficient and to aid users in personal tasks
Productivity Software
any type of application software that has the potential to help people do their work more efficiently
Groupware
designed to help several people collaborate on a single project using local networks or Internet connections
Software Suite
ïa collection of
application software sold as a single
package
Web App
Any application used primarily on the web such as MapQuest, Gmail, etc
Packaged software
off the shelf
Custom Software
Software needed by specific companies that require customized software
Shareware
Software distributed under a “try before you buy” business model
Freeware
–Software made available to the public for free
•Example: Adobe Reader
Open source software
–Makes the source or machine code available to public
•Can be modified by public
•You can develop your own software that integrates with the open-source software
•Linux: An example of an open-source operating system
Uninstalling Software
ïUninstall routines delete the software’s files from the various folders on your computer’s hard disk
Utility Software
(a type of system software) is designed to help monitor and configure settings for computer system equipment, the operating system, or application software
Desktop widget/gadget
a specialized utility program that appears on a computer’s desktop
Device Driver
software that helps a peripheral device establish communication with a computer
Antivirus Software
a type of utility software that looks for and eradicates viruses, Trojan horses, and worms
Virus Signature
a section of program code, that can be used to identify a known malicious program
virus definitions
Virus signatures and other information that antivirus software uses to identify and eradicate malware
Security Software
designed to protect computers from various forms of destructive software and unauthorized intrusions
Malicious software/Malware
any computer program designed to surreptitiously enter a computer, gain unauthorized access to data, or disrupt normal processing operations
3 types of malicious software/Malware
–Computer virus and computer worm
–Trojan horse: Keylogger and Remote Access Trojan (RAT)
–Spyware
A blended threat
malware that combines more than one type of malicious program
Copyright
a form of legal protection that grants the author of an original “work” exclusive rights
Software licenses
define the ways in which you may use a computer program
EULA (end-user-license-agreement)
displayed on-screen when you first install software
About this deck
By: angelica Allen
Created: 2010-12-10
Size: 36 flashcards
Views: 23
Created: 2010-12-10
Size: 36 flashcards
Views: 23
About StudyBlue
STUDYBLUE makes things that make you better at school.
Things like online flashcards with photos and audio.
Things like personalized quizzes and friendly reminders about when (and what) to study next.
Think of it as a digital backpack™: access to all of your study materials online and on your phone.
STUDYBLUE exists to make studying efficient and effective for every student, for free. Join us.
“I have been getting MUCH better grades on all my tests for school. Flash cards, notes, and quizzes are great on here. Thanks!”
Kathy
Kathy