Hardware & Software Important Notes - Class 5 International Computer Science Olympiad - Fully Solved Notes For Students

Hardware

• Hardware is like the body of the computer. 
• It's all the physical stuff we can touch and see.
• Examples of hardware include the monitor, keyboard, mouse, and the big box where everything goes inside (CPU).

• Input Devices: These are things we use to give commands to the computer, like the keyboard and mouse.
• Output Devices: These are things that show us the results of what the computer does, like the monitor or printer.
• Central Processing Unit (CPU): This is like the brain of the computer. It does all the thinking and calculations.
• Memory (RAM): This is like the computer's short-term memory. It helps the computer remember things quickly.

Software

• Software is like the instructions that tell the computer what to do. 
• It's not something we can touch—it's a set of programs and codes that make the computer work.
• Examples of software include games, word processors, internet browsers, and even the operating system that runs the computer.

• Operating System: This is like the boss of the computer. It controls everything and helps other programs run smoothly.
• Applications (Apps): These are programs that we use to do different tasks, like playing games, writing stories, or making drawings.
• Utility Software: These are programs that help us manage and maintain our computers, like antivirus programs or disk cleanup tools.

• Hardware needs software to do anything useful. It's like having a car (hardware) without a driver (software)—it won't go anywhere!
• Software tells the hardware what to do. For example, when we click on a game icon, the software tells the CPU to start the game and the monitor to show it to us.