Conduct routine Maintenance service of computer system and peripherals
1. What is a Computer System? A computer system is a group of electronic parts (hardware) and programs (software) that work together to receive data, process it, and produce results. When you type a letter in Microsoft Word and print it: Keyboard – sends data (input) Computer – processes data Monitor & Printer – show results (output) 2. Main Parts of a Computer System A computer system has three main parts : a) Hardware The physical parts you can see and touch . Examples: Input devices – keyboard, mouse, scanner Output devices – monitor, printer, speakers Storage devices – hard disk, pen drive System unit – CPU, motherboard, RAM, power supply b) Software The programs that tell the computer what to do. Type Function Example System Software Controls hardware Windows, Linux, macOS ...