Raspberry Pi The raspberry pi is a series of small single-board computers developed in the United Kingdom by the Raspberry Pi Foundation to promote teaching of basic computer science in schools and in developing countries. Setting up Raspberry Pi As standard the Raspberry Pi comes without an operating system. It depends on the user which operating system is installed within the computer. The operating system can be installed on the Raspberry Pi using the following steps: ...
Lab expriments and termworks Computer Networks lab Template Title of the experiment Objective of the experiment Brief theory about the experiment Algorithm & Program Sample input/output with calculations if necessary Course Learning Outcome Conclusion References Termwork 1 (not included) Title of the experiment Objective of the experiment Brief theory about the experiment Algorithm & Program Sample input/output with calculations if necessary Course Learning Outcome Conclusion References James F Kurose and Keith W Ross, Computer Networking, A Top-Down Approach, Sixth edition, Pearson,2017 . Larry L Peterson and Bruce S Davie, Computer Networks, fifth edition, ELSEVIER Termwork 2 Title of the experiment Write a program to implement RSA algorithm Objective of the experiment To implement RSA algorithm To understand the basic concepts of cryptography To understand network encryption Brief theory about the experiment RSA (Rivest-Shamir-Adleman) is one of the first public-key cryptosystems and is widely used for secure data transmission. The algorithm involves three steps: key generation, encryption, and decryption. ...
React tutorial About the tutorial This short note is based and created assuming you are using a Linux (debian/ubuntu) system, most of the commands will run on other systems like Windows and Mac as well but may require some changes. In case you need to follow along and using a Windows system, you can use the Windows Subsystem for Linux to run the commands. Installing react In order to install react, node and npm are required. To install node and npm, run the following command: ...
Windows prompts PowerShell PowerShell is a command-line shell and scripting language built on the .NET Framework. It is the successor to the Command Prompt. Commands are called cmdlets and are written in the form Verb-Noun. For example, Get-ChildItem lists the contents of a directory. There are a few aliases for common commands, such as ls for Get-ChildItem and rm for Remove-Item. Write-Output: Prints a line in the shell New-Item: Creates a new file within the same directory Get-Content: Reads the contents of a file Set-Content: Writes the contents of a file Remove-Item: Deletes a file Get-ChildItem: Lists the contents of a directory Command Alias Description Write-Output echo Prints a line in the shell New-Item touch Creates a new file within the same directory Get-Content type Reads the contents of a file Set-Content echo Writes the contents of a file Remove-Item del Deletes a file Get-ChildItem dir Lists the contents of a directory CMD echo <line>: Prints a line in the shell type <file>: Reads the contents of a file file operations copy <source> <target>: Copies a file move <source> <target>: Moves a file del <file>: Deletes a file dir: Lists the contents of a directory cd commands: required to change the current directory cd <dir>: Changes the current directory cd ..: Changes the current directory to the parent directory cd: Changes the current directory to the home directory mkdir <dir>: Creates a new directory system boot options shutdown /s: Shuts down the system shutdown /r: Restarts the system shutdown /l: Logs off the current user shutdown /h: Hibernates the system shutdown /a: Aborts the system shutdown computer processes tasklist: Lists all running processes taskkill /pid <pid>: Kills a process by its PID taskkill /im <name>: Kills a process by its name network operations ipconfig: Lists the network configuration ping <host>: Pings a host software management Note: These commands may require administrator privileges winget install <package>: Installs a package winget uninstall <package>: Uninstalls a package winget search <package>: Searches for a package winget show <package>: Shows information about a package winget source: Lists the package sources winget source add <source>: Adds a package source winget source remove <source>: Removes a package source system information systeminfo: Lists the system information systeminfo | findstr /B /C:"OS Name" /C:"OS Version": Lists the OS information systeminfo | findstr /B /C:"System Boot Time": Lists the system boot time systeminfo | findstr /B /C:"System Manufacturer" /C:"System Model": Lists the system manufacturer and model systeminfo | findstr /B /C:"Total Physical Memory": Lists the total physical memory systeminfo | findstr /B /C:"Available Physical Memory": Lists the available physical memory systeminfo | findstr /B /C:"Virtual Memory: Max Size": Lists the maximum virtual memory computer troubleshooting sfc /scannow: Scans the system for corrupted files chkdsk: Scans the system for corrupted disks dism /online /cleanup-image /restorehealth: Scans the system for corrupted images dism /online /cleanup-image /startcomponentcleanup: Cleans up the system dism /online /cleanup-image /startcomponentcleanup /resetbase: Cleans up the system and resets the base dism /online /cleanup-image /restorehealth /source:<source>: Scans the system for corrupted images using a source dism /online /cleanup-image /startcomponentcleanup /resetbase /source:<source>: Cleans up the system and resets the base using a source Batch files A batch file is a text file containing a series of commands to be executed by the command interpreter. It is similar to a shell script. Batch files have the .bat extension. ...
Image processing Theory jargon Difference between supervised and unsupervised learning Criteria Supervised Learning Unsupervised Learning Data Uses labeled data for training. Uses unlabeled data for training. Goal Predict a label for new data based on past observations. Discover hidden patterns or intrinsic structures within the data. Examples Classification, Regression Clustering, Association Complexity Less complex as it has a clear goal. More complex due to the lack of clear goal. Usage When the outcome of the problem is known. When the outcome of the problem is unknown. Application #1 Spam Detection Customer Segmentation Application #2 Credit Fraud Detection Anomaly Detection EM spectrum The Electromagnetic Spectrum (EM) is the range of all types of EM radiation. Radiation is energy that travels and spreads out as it goes – visible light that comes from a lamp in your house or radio waves from a radio station are two types of electromagnetic radiation. Other examples of EM radiation are microwaves, infrared and ultraviolet light, X-rays, and gamma-rays. ...