NaimExplain

How can IT help in Data and information management? - Data stored and maintained economically. - Easy access to data from any part of the world. - Provides security to data by restricting unauthorized access.

What are different phases of information system development? 1) System Investigation 2) System analysis 3) System designing 4) System Implementation 5) System Maintenance and Review

Explain three functional units of CPU. 1) Control Unit Controls flow of data and instruction. 2)Arithmetic and Logical Unit Does arithmetic operations 3)Registers High speed memory units within CPU for storing small amount of data.

What is CPU? What are its functional units? Central processing unit which is also known as CPU is the brain of the computer. It is the hardware that interprets and executes the program instructions and coordinates how all other devices work together. Functional units: -Control Unit -Arithmetic Logic Unit -Registers

What is an operating system? What are various activities performed by it? Operating System is a software that helps in operating the computer hardware and acts as an intermediate between the hardware and the application program. Activities: - Perform hardware functions. - User Interface - Memory Management - Task Management - Networking Capability - File Management - Hardware Independence