*Rajasthan NHM Computer Important Points 👇👇* *Input and Output Devices* * Input devices: Keyboard, mouse, scanner, microphone, barcode reader. * Output devices: Monitor, printer, speaker, projector. * Touchscreen acts as both input and output device. *Operating System* * An Operating System (OS) manages hardware, software, and system resources. * Examples: Windows, macOS, Linux, Android. * Functions include memory management, task scheduling, and user interface control. *MS Office and Internet Tools* * MS Word: Used for document creation, editing, formatting. * MS Excel: Handles spreadsheets, formulas, charts, and data analysis. * MS PowerPoint: Used for creating presentations. * MS Access: A database management tool. * PDF: Portable Document Format for secure, read-only sharing. * E-mail: Electronic mail used for official communication. * Internet: Global network for accessing information and services. *Computer Viruses and Anti-Viruses* * Computer virus: A malicious program that replicates and disrupts system performance. * Types: Trojan, Worm, Ransomware, Spyware. * Antivirus software: Detects and removes threats (e.g., Norton, Quick Heal, McAfee). *Hardware, Software & Elements of Computer System* * Hardware: Physical parts (CPU, RAM, keyboard). * Software: Set of instructions (e.g., OS, applications). * Firmware: Software embedded in hardware. * Humanware: People who use the computer system. * Storage media: HDD, SSD, Pen Drive, Optical Disks. * Peripherals: External devices (mouse, printer, scanner). *IT in Governance and Cyber Laws* * E-Governance: Use of IT for delivering government services efficiently. * Benefits: Transparency, speed, and accountability. * IT Acts: Indian IT Act 2000 governs cybercrimes and electronic transactions. * Digital Signature, Cybercrime Prevention, and Data Protection Laws are key components.