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Note for Basic Computer Engineering - BCE by Malah Deep

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selecting multiple fields, hiding/unhiding and freezing a field. ii. Report: Creating a report of table, query, designing a report, moving report to MSword Module- 6 (Multimedia) (a) Multimedia : What is multimedia, components (Text, graphics, Animation, Audio, video), Multimedia Applications : Multimedia Presentation, Foreign language learning, Video games, Special effects in movies,, Multimedia conferencing, media center computer (b) Topology : introduction, star topology, Ring or circular Topolpgy, tree topology, graph topology, mesh topology, Repeater, bridge, Router gateway Module- 7 (Networking system) (a) Concept of Networking: What is a network, network goals, Types, Media, Data Communication: Meaning, Elements, Modes, Speed, Mediums, Types of data transmission (b) Computer Networks: definition, Terminology, Technology (LAN, WAN, MAN etc.), Server, client, Work group, Host, System administrator. Network Applications. Suggested Readings: 1. Introduction to computers, Peter Norton,TMH 2. Computer Fundamentals, P.K.Sinha,BPB 3. MS-Excel 2003 complete reference. 4. MS-Access 2003 complete reference. 5. Internet-An Introduction , CIStems-TMHseries. 6. Computer Sciences, D.P.Nagpal, PHI 7. Internet- Every Thing You Need To Know, D.E. Comer, PHI 8. Comdex Computer Course Kit, Vikas Gupta, Dreamtech, N.Delhi

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Introduction to Operating Systems A computer system has many resources (hardware and software), which may be require to complete a task. The commonly required resources are input/output devices, memory, file storage space, CPU etc. The operating system acts as a manager of the above resources and allocates them to specific programs and users, whenever necessary to perform a particular task. Therefore operating system is the resource manager i.e. it can manage the resource of a computer system internally. The resources are processor, memory, files, and I/O devices. In simple terms, an operating system is the interface between the user and the machine. Two Views of Operating System 1. User's View 2. System View User View : The user view of the computer refers to the interface being used. Such systems are designed for one user to monopolize its resources, to maximize the work that the user is performing. In these cases, the operating system is designed mostly for ease of use, with some attention paid to performance, and none paid to resource utilization. System View : Operating system can be viewed as a resource allocator also. A computer system consists of many resources like - hardware and software - that must be managed efficiently. The operating system acts as the manager of the resources, decides between conflicting requests, controls execution of programs etc.

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Operating System Management Tasks 1. Processor management which involves putting the tasks into order and pairing them into manageable size before they go to the CPU. 2. Memory management which coordinates data to and from RAM (random-access memory) and determines the necessity for virtual memory. 3. Device management which provides interface between connected devices. 4. Storage management which directs permanent data storage. 5. Application which allows standard communication between software and your computer. 6. User interface which allows you to communicate with your computer. Functions of Operating System 1. It boots the computer 2. It performs basic computer tasks e.g. managing the various peripheral devices e.g. mouse, keyboard 3. It provides a user interface, e.g. command line, graphical user interface (GUI) 4. It handles system resources such as computer's memory and sharing of the central processing unit(CPU) time by various applications or peripheral devices. 5. It provides file management which refers to the way that the operating system manipulates, stores, retrieves and saves data. 6. Error Handling is done by the operating system. It takes preventive measures whenever required to avoid errors. How DOS works: Short for Microsoft Disk Operating System, MS-DOS is a non-graphical command line operating system derived from 86-DOS that was created for IBM compatible computers. MS-DOS originally written by Tim Paterson and introduced by Microsoft in August 1981 and was last updated in 1994 when MS-DOS 6.22 was released. MS-DOS allows the user to navigate, open, and otherwise manipulate files on their computer from a command line instead of a GUI like Windows.

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