1. Overview of Computer system

2. A. Computer Systems
Computer Hardware
Computer Software

3. Computer Hardware Input Devices –data can be entered to the computer
Central Processing Unit – processes the organization and movement of data in the system
Primary Storage – main memory; where programs and data are stored temporarily while processing
Output Devices
Auxiliary Storage Devices – secondary storage; where data is stored permanently

4. System Application Software Software System Development Software
Operating System
System Support
System Development
Application Software
General Purpose
Application Specific

5. System Software
Manage the hardware resources of a computer and perform required information processing tasks.

6. System Software
Operating system – provides services that allow users access to the system. (such as user interface, file and database access, communication systems.
System Support – provides performance statistics for the operational staff and security monitors to protect the system and data. (disk format, disk clean up)
System Development – language translators that convert programs into machine language for execution, debugging tools and computer- assisted software engineering (CASE) systems.

7. Application Software's
General-purpose software – purchased from a software developer and can be used for more than one application.
Application-specific software – with an intended purpose.

8. A. Computer Systems
User
Application Software
System
Software
HARDWARE