Class IX Computer System (chap-1) 1. Computer- A computer is an electronic device that can perform a variety of operations according to a set of instructions called program. 2. Hardware- Hardware refers to physical parts of the computer that can be touched physically. 3. Software- Software refers to the instructions that tell the computer what to do. 4. Data- Unprocessed raw facts and figures are data e.g., a name (Ram), some marks (72.5%), a year (2020) etc. are data. 5. Information- It refers to the processed data that is meaningful e.g., above data can be converted into information as “Ram, who passed in 2020, secured 72.5% marks.” 6. Functional components of a computer system A computer, mainly, has four functions 1...