Tiêu đề class 11 ch 1-2.pdf ✅

Class 11 Chapter 1 Computer System A computer is an electronics machine which takes raw data, processes it according to predefined instructions, and gives meaningful results as output, storing it as requirements. Main Components of a Computer: 1. Central Processing Unit (CPU): ○ The CPU is the "brain" of the computer that carries out instructions from software. It performs calculations and makes decisions to process data. 2. Memory (RAM): ○ RAM (Random Access Memory) is temporary storage that the CPU uses to hold data and instructions that are actively being used. 3. Storage: ○ Long-term storage where data is saved permanently or semi-permanently. Examples include hard drives, SSDs, and external storage devices. 4. Input Devices: ○ Devices like a keyboard, mouse, or microphone that allow users to enter data into the computer. 5. Output Devices: ○ Devices like monitors, printers, and speakers that display or output data from the computer. 6. Motherboard: ○ The main circuit board that connects all the components of the computer and allows them to communicate with each other. 7. Power Supply: ○ Provides electrical power to the computer components.