matlab portable windows 7 64 bit
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A basic version offers 20 hours per month for free with access to 10 common products. 2. GNU Octave (Portable) MATLAB System Requirements for Windows - MathWorks

MathWorks does not offer a standalone portable version.

MathWorks, the developer of MATLAB, does not provide an official "portable" version. Their licensing and software architecture are designed for installed environments. Each licensed copy of MATLAB binds itself to a machine’s host ID (MAC address or volume serial number) and writes hundreds of registry entries.

Find the for running R2021b on your specific hardware. Using Previous MATLAB Releases - MathWorks