Simple Computer Learning with Abhishek

Data in DBMS:  Data is raw facts or unprocessed values. It can be in the form of numbers, characters, symbols, images, graphics, etc. Data is input given to the computer by the users. It is meaningless on its own. Example : 10061995 - Just a number (we don't know what it means). Information in DBMS: Processed data is called information. It is meaningful and useful. Information can be reused multiple times. Example: 10061995- If we know it's someone's date of birth, it becomes meaningful information. What is Database? A database is an organized collection of data that can be easily accessed, managed, and updated.  Key points: Database stores data in a structured form (like tables). It helps in quick retrieval and processing of data. Data in a database can be added, deleted, modified, and searched easily. Example: A school database may store: (Student names, Roll numbers, Marks and Addresses).  A library database stores(Book names, Author names, and Borrower's details). ...

Ch-3 (Introduction to ICT)   What is ICT? Ans: ICT stands for Information and Communication Technology. It refers to the use of electronic technologies like computers and mobile phones to store, process, and share information.                            Meaning of ICT: 1. Information: Representation of data in a meaningful way. Example-Student marks, Names, Address, Reports                                                                                                                                                            2. C...

 Class IX PART A: Employability Skills Unit 1: Communication Skills SESSION 1: Communication Cycle Exercise 1 1. List the main components of communication process. The main components or elements of communication process are sender, message, encoding, communication channel, receiver, decoding and feedback. 2. Who is responsible for the encoding of the message? Encoding of the message is done by the sender before sending it to the receivers. 3. Who is responsible for decoding the message? Decoding of the message is done by the receiver after receiving the message. 4. List 3 scenarios of technology based communication? Three scenarios of technology communication are conversation over telephone, online chat and video conferencing. 5. What do you mean by the channel of communication? Give some examples. The medium of communication is called communication channel such as oral, written, technology based. Exercise 2 1. Describe a scenario where all the major factors of effective commun...

  Session -1(Operating System & Basic File Operations) Operating System: An operating system is a system software that acts as an interface between the user and the computer hardware. It manages all hardware and software resources of the computer and provides services for computer programs to run efficiently. Functions of Operating System: 1. Memory Management: Operating System manages the computer's memory- it keeps track of each byte and decides how much memory to allocate to processes. 2. Process Management : Operating System manages running programs (processes), their execution, and multitasking.  3. File Management: It handle file creation, deletion, reading, writing, and organization into directories/ folders. 4. Device Management: OS controls and coordinates all input/output(I/O) devices like keyboard, mouse, printer, etc. 5. User Interface: Provides interface (like GUI or Command Line) for user interaction with the system. 6. Security and Access Control: Protect...

  Introduction to MS-DOS MS-DOS(Microsoft Disk Operating) is a command-line based operating system developed by Microsoft. It helps the computer manage hardware, files, and programs by typing commands. MS-DOS allows users to create, delete, copy, move, and organize files and folders. It also provides basic control over memory, disk drives, and other system resources. Unlike modern operating systems, MS-DOS does not have a graphical interface and works entirely through a text-based command prompt. How to open DOS Window or Command Prompt Press Windows key + R, type "cmd", then press enter. or, open the Start Menu / Search bar, type Command Prompt or cmd, and press enter. You can also create a desktop shortcut for cmd.exe for quick access. various commands in MS-DOS 1. DIR : The DIR commands is used to display the list of files and folders in the current directory or drive. It helps users see what files are present, their sizes, and other details.           ...

                                                 PART-A: Employability SKILLS Ch-1(Communication Skills)       What is Communication?         Communication is the process of sharing ideas, thoughts, feelings, or information between two or more people so that they can understand each other clearly. It can happen through speaking, writing, body language, or using technology.                                                     In other words Communication means exchanging information so that both sender and receiver understand each other properly. What is Communication skills? Communication skills means the ability to express your thoughts, feelings, and information clearly and effectively to o...