Chp.1: Information Technology Flashcards
What are the parts of the information system?
1- People
2- Procedures
3- Software / programs
4- Hardware
5- Data
6- Internet
What is the more important information system?
People
How do computer touch our every day life directly?
By cearting document MS
or connecting to the internet.
How do computer touch our every day life indirectly?
USING computer in:
1- medicine
2- entrainment
3- education
4- business
What are procedures?
are the rules or guidelines to follow when using Software - Hardware - Data
What are the forms of procedures?
1- Printed documented.
2- Electronic manuals
written by computer specialists
What are software / programs
are the instruction the tell the computer how to do its work.
What is the purpose of Software?
to convert data to infromation.
What are the 2 majors of software?
1- Application Software (e.g. MS) < people use
2- System Software (e.g. OS) < computer use
What is a computer?
is an electronic device that follows instructions to accept input, process it and produce information.
What are the 4 types of computers?
1- Supercomputer
2- Mainframe computers
3- Midrange computers
4- Minicomputer
What are the features / characteristics of supercomputer?
- special computers
- High capacity
- used by very large corporations.
- used to process massive of data.
What are the features / characteristics of Mainframe computer?
- occupy specially wired
- Air conditioned room
- used by insurance company / large organizations
- used to process information about million of policy holders
What are the features / characteristics of Midrange computer?
- Used by medium size companies / departments of large companies.
- used for retrieving data from database.
What are the features / characteristics of personal computers?
- Most widely used
- fastest growing
What are the types of PCs?
- desktop
- laptop
- tablets
- wearables
- smartphones
What is Hardware?
is the equipment that processes the data to create information.
controlled by the software.
What are the 4 categories of Hardware ?
1- system unit
2- input / output
3- secondary storage (USB - hard disk)
4- communication: internet / printer
What is data?
- is a raw, unprocessed facts.
- including text - no. - image and sound.
What are 4 common types of files?
1- Document file
2- worksheet file
3- Database file
4- Presentation file
Document file.
- created by word processor
- used to save documents e.g. memo - letter
Worksheet file.
- created by spreadsheet (excel)
- used to analyze things e.g. budget and predict sales.
Database file.
- created be database management programs.
- used to contain highly structures and organized data.
- e.g. the information stored about students of uni
Presentation file.
- created by presentation graphic programs.
- used to save presentation materials.
What is connectivity?
is the capability of pc to share information with other computer. e.g network.
What is network?
is a communications system connecting 2 or more computers.
What is the largest network in the world?
internet
What does the WEB provides?
a multimedia interface to numerous resources available on the internet.
