Piano Companion is a music theory reference app for songwriters, producers, teachers, and students. Look up any of 1,500+ chords or 10,000+ scales instantly, build progressions, and explore harmony on iOS, Android, and Mac.
Whether you're stuck on a progression, blanking on a scale name, or just exploring — Piano Companion gives you the answer in seconds. Press the keys you know, and it tells you what you're playing.
Search by name or tap the keys you know. Piano Companion identifies what you're playing — even from a MIDI keyboard.
The Chord Progression Builder suggests chords that fit your key. Experiment with patterns, listen back, and find what sounds right.
See notes on the grand staff, fingering for both hands, intervals, degrees, and compatible scales — all in context, not abstract textbook diagrams.
MELSEC MEDOC 2.4 is a 16-bit DOS application. Modern 64-bit Windows operating systems (Windows 10 and Windows 11) cannot run 16-bit applications natively. Attempting to open the executable file directly will result in a compatibility error. Method 1: Using DOSBox (Recommended)
If you are using DOSBox, you must map your PC’s virtual USB COM port to a simulated DOS COM port. Open the dosbox.conf configuration file and edit the serial section: [serial] serial1=directserial realport:COM3 Use code with caution.
MELSEC Medoc 2.4 is a software tool used for programming, debugging, and monitoring Mitsubishi Electric's MELSEC PLCs. The software is designed to work with MELSEC PLCs, which are widely used in industrial automation applications.
Originally built for the , MELSEC MEDOC 2.4 often requires specific considerations to run on modern hardware: melsec medoc 2.4 download
. You may find it on legacy software archives or through specialized industrial automation communities like Compatibility
MELSEC MEDOC 2.4 Download: Programming Legacy Mitsubishi PLCs
Since there is no official download channel, the process is to locate it through online forums and communities. A widespread resource is PLC forum discussion boards, where legacy files are often shared. MELSEC MEDOC 2
Call old industrial electrical suppliers. Many never threw away their software libraries. A local distributor who has been in business since the 1990s might have a dusty CD-R with MEDOC 2.4 on it.
Launch DOSBox and mount the directory by typing: mount c c:\medoc Switch to the mounted drive: c: Execute the main program file (usually MEDOC.EXE ): medoc Method 2: Virtual Machines
Finding an official download link for MELSEC MEDOC 2.4 is challenging because Mitsubishi Electric has classified it as an product. It is no longer actively distributed, updated, or officially supported on modern enterprise software portals. Secure Sourcing Methods Method 1: Using DOSBox (Recommended) If you are
Even from these sources, you must scan every file with modern antivirus software (Windows Defender, Malwarebytes) before running.
Do you already have a (like an SC-09 adapter)?
If you have exhausted all internal company archives and legitimate channels, here are the common sources where the medoc24.zip or MEDOC_2.4 file resides.
Here is the critical reality check: It is an obsolete, unsupported, and end-of-life product. You will not find an official, clean download on Mitsubishi’s global or regional websites.
You will quickly notice that finding this software is not as simple as a standard Google search. There are three primary reasons for this:
Piano Companion is a music theory reference app that gives musicians instant access to 1,500+ chords with inversions, 10,000+ scales, a chord progression builder, reverse chord lookup, and an interactive circle of fifths. It is available on iOS, Android, and macOS, and supports 40+ languages. Whether you are a beginner learning your first chords or a professional songwriter sketching ideas, Piano Companion provides the answers you need in seconds.
Tap the piano keys you know on screen or connect a MIDI keyboard, and Piano Companion identifies every matching chord and scale in real time. This is especially useful when you hear a chord in a song but don't know its name — just play the notes and the app tells you what they form.
Piano Companion is free to download on iOS, Android, and macOS. The free version includes core chord and scale lookups. A Pro upgrade unlocks additional features including all chord inversions, the full scale library, the chord progression builder, and the circle of fifths tool.
Yes. Connect any MIDI keyboard to your device and Piano Companion will detect the notes you play, identifying chords and scales in real time. This works on iOS (via Camera Connection Kit or Bluetooth MIDI), Android (via USB OTG), and macOS (via USB or Bluetooth).
Piano Companion is available on iPhone, iPad, Android phones and tablets, and macOS. Your chord libraries sync across devices, so you can start on your phone and continue on your Mac.
Available on every major platform. Start exploring chords and scales today.
