if you are looking for GSEB Class 9 Computer Ch 1 Introduction to Computer Solution then you are at the right place.
List the basic components of a computer. Describe each in brief.
Basic Components of a Computer
- Input Unit: Devices that provide data and instructions to the computer (e.g., keyboard, mouse).
- Memory Unit:
- Primary Memory: Volatile memory for temporary data storage (e.g., RAM).
- Secondary Memory: Non-volatile memory for long-term data storage (e.g., hard disk, SSD).
- Central Processing Unit (CPU):
- Arithmetic Logic Unit (ALU): Performs arithmetic and logical operations.
- Control Unit (CU): Manages the execution of instructions and controls other components.
- Output Unit: Devices that present results to the user (e.g., monitor, printer).
Draw a block diagram of a computer containing basic components of a computer. Explain the diagram.
Block Diagram of a Computer
Description of the Diagram
- Input Unit: Receives data and instructions.
- Memory Unit: Stores data, instructions, and processed output.
- Central Processing Unit (CPU):
- Control Unit (CU): Directs operations of all other units.
- Arithmetic Logic Unit (ALU): Performs computations.
- Output Unit: Presents the final results.
What are the popular input devices?
Popular Input Devices are :-
- Keyboard
- Mouse
- Joystick
- Barcode Reader
- Universal Serial Bus (USB) Devices
- Hard Disk
What are the popular output devices?
Popular Output Devices are –
- Monitor
- Printer
- Speakers
- Headphones
Differentiate primary and secondary memory.
| Primary Memory | Secondary Memory |
| Volatile | Non-volatile |
| Fast access | Slower access |
| Temporary storage (e.g., RAM) | Long-term storage (e.g., hard disk, SSD) |
What is ALU? Give full form and explain work of the ALU in one line.
Arithmetic Logic Unit (ALU)
- Full Form: Arithmetic Logic Unit
- Work: Performs arithmetic and logical operations.
What is CU? Give full form and explain work of the CU in one line.
Control Unit (CU)
- Full Form: Control Unit
- Work: Manages the execution of instructions and controls operations of other components.
Which component is called brain of the computer? Why?
Brain of the Computer
- Component: Central Processing Unit (CPU)
- Reason: It controls all operations and processes data, making it essential for the computer’s functioning.
What are the characteristics of computers ?
