The Binary Countdown Protocol is a contention-resolution MAC (Medium Access Control) protocol used on shared broadcast channels. When multiple stations want to transmit simultaneously, each station broadcasts its address as a binary number, bit by bit from the most significant bit (MSB) downward. Stations with a 0 bit at a position where another station has a 1 bit drop out of the contention. The station whose complete binary address survives the entire comparison wins the channel and transmits its frame. This guarantees that the station with the highest binary address always wins each contention round.
This C++ program simulates the Binary Countdown Protocol. Each frame is treated as an 8-bit binary number. The program converts each frame to its decimal equivalent (which represents the station’s binary address), then announces the frames in descending priority order — highest decimal value first — as they would be granted channel access.
git add . stages all changes in the current directory and everything below it — modified files, new files, and deleted files — in a single command. It’s the fastest way to prepare everything for a commit when you want the full working-directory state captured. This is the fourth post in this site’s Git command guide, following Git Add.
git status shows you the current state of your working directory and staging area — which files are tracked, which have been modified, which are staged for the next commit, and which Git doesn’t know about at all. It’s the command I run more than any other Git command, usually right before deciding what to do next. This is the sixth post in this site’s Git command guide, following Git Commit.
git log displays the commit history of a repository — author, date, commit hash, and message, in reverse chronological order with the most recent commit first. It’s the command I reach for whenever I need to answer “who changed this and when,” and it has far more useful flags than the bare command suggests. This is the eleventh post in this site’s Git command guide, following Git Pull.
git branch lists, creates, renames, and deletes branches in a Git repository. Branches are just lightweight, movable pointers to commits — creating one is nearly instant because it doesn’t copy any files. This is the seventh post in this site’s Git command guide, following Git Status.
git checkout switches between branches and updates the files in your working directory to match the version stored in a specific branch or commit. It’s one of Git’s oldest commands — and one of its most overloaded, which is exactly why newer Git split part of its job out into two other commands. This is the eighth post in this site’s Git command guide, following Git Branch.
git pull fetches commits from a remote repository and merges them into your current local branch. It’s actually two commands in one — git fetch followed by a merge (or rebase, depending on configuration) — which is exactly why modern Git insists you tell it which reconciliation strategy you want. This is the tenth post in this site’s Git command guide, following Git Push.
