What is Information System ?
Parts of Information System
- People
- Procedure
- Software
- Hardware
- Data
- Connectivity
Connectivity
–Sharing of information
–Wireless communication has widespread use
Procedure
-Procedures specify rules or guidelines for computer operations
People
-Most important part of any system
-Contact is
- Direct & Indirect
Data
1. Document files
- Created by word processors to save documents such as memos, term papers, and letters
2. Worksheet files
- Created by electronic spreadsheets to analyze things like budgets and to predict sales
3. Database files
- Created by database management programs to contain highly structured and organized data
4. Presentation files
- Created by presentation graphics programs to save presentation materials
Reflection on IT Chapter 1 : Information Technology, The Internet And You
Software
-Software is another name for programs
-Two major kinds of software
1. System software
- A collection of programs-not a single program which are operating systems, utilities, device drivers.
- Enable the application software to interact with the hardware
2. Application software
- End-user software
- Can be divided into 2 categories, there are basic application and specialized application
Hardware
Types of Computers (Hardware)
- Supercomputers
- Mainframe Computers
- Minicomputers (Mid-range computer)
- Microcomputers (Desktop/Notebook/Media Center/Tablet PC/Handheld/Netbook)
Basic Components of Desktop Computer:
- System unit
- Input and Output Devices
- Secondary storage
- Communication