Computer Application in Business (BCOS-183) - New

1. MIS provides accurate and timely information for managerial decisions.
2. It supports planning and control by reporting performance and exceptions.
3. It improves coordination between departments and helps monitor KPIs like sales, stock and costs. (Any three points can be written.)

IaaS and SaaS are cloud service models.

1. IaaS provides infrastructure like virtual servers and storage, whereas SaaS provides ready-to-use software over internet.
2. In IaaS, user manages operating system and applications, whereas in SaaS, provider manages everything and user only uses the software.
3. IaaS is used for hosting/custom setups, whereas SaaS is used for applications like email, office tools and CRM.

(Any three differences can be written.)

An operating system (OS) is system software that acts as an interface between user and hardware.

Functions of OS:

1. Process management: runs programs and allocates CPU time.
2. Memory management: allocates and frees RAM for applications.
3. File management: creates, stores, organises and protects files/folders.
4. Device management: manages devices such as printers, keyboard and mouse using drivers.
5. Security and user accounts: login, permissions and protection.
6. User interface: provides GUI (windows, icons, menus).

Without an OS, a computer cannot be used easily for business tasks like document creation, file storage and printing.