We clearly explain the procedure to easily check from the settings screen whether your iPhone is SIM-locked or unlocked. Please refer to this when switching to a cheap SIM or purchasing a used device.
Provides an easy-to-understand overview of the biggest unsolved problem in computer science, the 'P≠NP conjecture', from the perspective of a deterministic Turing machine, incorporating the difference between 'Class P' (solvable in polynomial time) and 'Class NP' (solution validity can be verified in polynomial time).
A report on being re-awarded the Microsoft MVP (2024-2025) for the 8th time this year. Introduces the overview of the Microsoft MVP program, the evaluated activities, the reasons for this award, and a reflection on the past year.
An easy-to-understand guide on how to download and save high-quality YouTube videos, or extract and save them as mp3 audio files using the command-line tool 'yt-dlp'. Covers everything from installation to usage.
Introduces a compiled list of recommended short video links that trended on social media, including the touching episode of the ball boy who saved the team during a Tottenham match and was praised by Mourinho.
Introduces profound quotes by Einstein. Explains his teachings on believing in oneself and continuing to stand strong without being swayed by others' evaluations or criticism. Packed with hints that can be applied to modern daily life, such as at the workplace and on SNS.
We introduce a simple C language sample code that determines, generates, and lists prime numbers within a specified range (from 1 to n). We provide a programming implementation example and explanation easy for beginners to understand, using an efficient algorithm with an isPrime function.
Features the full text of Akiko Yosano's representative anti-war poem, 'Kimi Shinitamou Koto Nakare' (Thou Shalt Not Die), composed for her brother serving in the Siege of Port Arthur during the Russo-Japanese War. Deciphers the background and deep messages embedded in this masterpiece that appeals to family love and the preciousness of life.
We explain the life and masterpieces of Akiko Yosano, a poet active from the Meiji to Showa eras. We provide an easy-to-understand introduction to her achievements, including her debut poetry collection 'Midaregami', which passionately sang of women's romantic feelings, and the pacifist poem 'Thou Shalt Not Die', which criticized the Russo-Japanese War.
Explains the basic usage and calculation commands of Mathematica for beginners. Summarizes specific examples of frequently used functions such as solving equations and simultaneous equations (Solve), inequalities (Reduce), differentiation (D), integration (Integrate), and matrix calculations.
We introduce the CLI installation method for the fast static site generator Hugo, and a list of basic commands frequently used in blog operation. We explain the operations Hugo beginners should remember, such as launching a new site, creating articles, starting a local server, and building.
Introduces a list of recommended extensions that make Visual Studio Code (VSCode) even more convenient. We have carefully selected essential plugins that boost development efficiency, such as container management, Git code management, and AI code completion by Copilot.
An easy-to-understand explanation of the overview of the JavaScript library 'Mermaid.js', which allows drawing diagrams like flowcharts and Gantt charts using text, and the specific steps to introduce, configure, and make it usable in the static site generator Hugo.
We explain how to undo a reset and restore the original commit state when you accidentally execute 'git reset' in Git. We clearly introduce the procedure to check the commit ID using 'git reflog' and correctly revert the state.
Introduces the news that the source code of the OS 'MS-DOS 4.0', released about 40 years ago, has been open-sourced and published on GitHub. Explains this historical material, where most of the code is written in 8086 assembly.
A must-see for engineers looking to step up from programming beginners to intermediate! Carefully selects and introduces 15 must-read books recommended for beginners to learn the basic knowledge and design methods of software development, such as 'The Art of Readable Code' and 'The Pragmatic Programmer'.
We distribute for free a convenient Excel calendar template that automatically reflects Japanese holidays for that month simply by entering the year and month. Please download and use it for schedule management and business efficiency.
We explain how to solve the issue where screen DPI (scaling) settings automatically reset upon PC startup in a Windows 11 multi-display environment. This guide summarizes the steps to disable fast startup from the control panel.
We explain how to get only the latest commit (shallow clone) without downloading the entire history of a Git repository. This is a convenient technique to save disk space and quickly clone a repository using the '--depth 1' option.
We explain the solution when GitHub Copilot becomes unusable due to certificate errors like 'unable to verify the first certificate'. We introduce specific steps involving changing ESET settings.
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