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## Components of a Computer
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1. **CPU**: Central Processing Unit - The "brain" of the computer.
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2. **RAM**: Random Access Memory - For temporary data storage.
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3. **Hard Drive**: Long-term data storage.
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4. **Motherboard**: Connects all components.
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5. **Power Supply**: Provides electrical power.
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6. **GPU**: Graphics Processing Unit - Handles visuals.
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7. **Input Devices**: Such as keyboard, mouse, etc.
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8. **Output Devices**: Such as monitor, printer, etc.
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9. **Cooling System**: Fans or liquid cooling.
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10. **Case**: Encloses the components.
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1. **CPU**: Central Processing Unit - The "brain" of the computer that performs calculations and logic operations.
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2. **RAM**: Random Access Memory - Temporary data storage that is faster to read and write compared to hard drives.
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3. **Hard Drive**: Long-term data storage, can be HDD or SSD.
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4. **Motherboard**: The main circuit board connecting all components.
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5. **Power Supply**: Converts electrical power to a format suitable for the computer.
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6. **GPU**: Graphics Processing Unit - Handles rendering images and videos.
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7. **Input Devices**: Devices like keyboards, mice, and scanners for user input.
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8. **Output Devices**: Devices like monitors, printers, and speakers for displaying output.
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9. **Cooling System**: Fans or liquid cooling to maintain optimal temperature.
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10. **Case**: Houses and protects the components.
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# Input and Output devices
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## Input devices
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In computing, an input device is a piece of equipment used to provide data and control signals to an information processing system, such as a computer or information appliance.Examples of input devices include keyboards, mouse, scanners, cameras, joysticks, and microphones.
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## Input and Output Devices
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### Types of input devices
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#### Keyboards
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#### Mouse/Touchpad/Track point
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#### Scanners
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#### Webcam/Cameras
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#### Microphone
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#### Joystick
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### Input Devices
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Input devices provide data and control signals to a computer. Examples include keyboards, mice, scanners, cameras, joysticks, and microphones.
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## Output devices
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Output devices in computing are hardware components that display or output data and information from a computer to the user or another system. Examples include monitors, printers, and speakers.
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#### Types of Input Devices
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- **Keyboards**: Text input
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- **Mouse/Touchpad/Trackpoint**: Pointer navigation
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- **Scanners**: Image input
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- **Webcam/Cameras**: Video input
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- **Microphone**: Audio input
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- **Joystick**: Game control
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### Types of output devices
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#### Monitor
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#### Speakers/Headphones
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#### Printers
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### Output Devices
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Output devices display or output data from a computer. Examples include monitors, printers, and speakers.
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# Storage
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## Units of storage
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 - and speed
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#### Types of Output Devices
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- **Monitor**: Visual display
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- **Speakers/Headphones**: Audio output
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- **Printers**: Printed output
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## Type of storage
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 - Magnetic Storage
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 - Optical
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 - Solid State
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## Storage
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# MAchine language
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 - Binary
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### Units of Storage and Speed
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- Byte, Kilobyte, Megabyte, Gigabyte, Terabyte
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- RPM, Read/Write Speed
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# networking explain
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 - Explain Protocols
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 - TCP
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 - UDP
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 - MAC Address
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 - IP/DNS
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 - Network ports
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 - Subnetting
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 - firewall usage
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 - other protocols ( HTTP, FTP, SSH, TELNET)
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 - OSI Model
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 - VPNs
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### Types of Storage
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- **Magnetic Storage**: HDD
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- **Optical**: CD, DVD
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- **Solid State**: SSD
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# Operating System
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 - BIOS
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 - File system
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 - Kernel
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 - Drivers
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 - explamples of operating systems
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## Machine Language
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- **Binary**: The basic language of computers, consisting of 0s and 1s.
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## Networking
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# Troubleshooting Hardware
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 - RAM
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 - CPU
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 - MB
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 - PSU
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### Explain Protocols
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- Rules governing data transfer
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# Troubleshooting Network
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 - OSI Model
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#### Types of Protocols
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- **TCP**: Reliable data transfer
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- **UDP**: Faster but less reliable
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- **MAC Address**: Hardware identification
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- **IP/DNS**: Internet addressing
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- **Network Ports**: Data pathways
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- **Subnetting**: Network segmentation
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- **Firewall Usage**: Security measure
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- **Other Protocols**: HTTP, FTP, SSH, TELNET
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- **OSI Model**: 7-layer model for networking
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- **VPNs**: Virtual Private Networks for secure communication
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## Operating System
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- **BIOS**: Basic Input/Output System, the firmware for initializing hardware.
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- **File System**: Manages how files are stored and retrieved.
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- **Kernel**: Core part of OS, manages system resources.
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- **Drivers**: Software to interface with hardware.
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- **Examples of Operating Systems**: Windows, macOS, Linux
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## Troubleshooting Hardware
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- **RAM**: Check for faulty memory modules.
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- **CPU**: Overheating or malfunction.
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- **MB**: Motherboard issues.
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- **PSU**: Power supply unit failures.
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## Troubleshooting Network
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- **OSI Model**: Use it as a framework for troubleshooting.
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