Concise Notes on Computer and Information Systems

Input: System takes an input to process.
Process: Actions performed on the input, resulting in output.
Control: Forces that govern the processes.
Feedback: Key control mechanism.
Interdependency: Parts interact; changes in one part affect the whole system.
A system is more than the sum of its parts; combined parts create a new entity.

Interdependent Parts: Interact for the process, mathematical, logical, or data transfer operations.
Input: Any feed initiating system function from the external environment.
Process: Activity of the system.
Output: End product or waste.
Control: Prevents or corrects system errors.
Feedback: Output used for self-regulation.

Management Information System (MIS): Provides information about business operations.
Knowledge Work System (KWS): Supports creation of new knowledge.
Office Automation System (OAS): Manages documents and facilitates communication.
Executive Support System (ESS): Supports strategic decisions.
Bibliographic Retrieval System: Retrieves bibliographic data.
Stand-Alone System: Designed for a single application.
Transaction Processing System (TPS): Processes routine operations.
Physiologic Monitoring System (PMS): Measures and monitors physiologic findings.
Decision Support System: Supports human judgment.
Expert System: Stimulates expert reasoning.
Artificial Intelligence System: Models human reasoning.
Natural Language System: Recognizes and processes human speech/handwriting.