GRO2 and GRO4 are image extensions associated with a series of graphing calculators released by Hewlett-Packard, called the HP-49G series. Features delivered by these devices included solving advanced algebra equations and plotting graphs. GRO2 files most likely contain screen shots or commands associated with HP-49G calculators.
The quick and simple way to handle your files is to get a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch conversions. As you will soon realize, reaConverter will help you avoid spending countless hours trying to figure out how to convert multiple GRO2 files as once.
JPEG JPG PNG GIF TIFF TIF BMP ICO EMF WMF AI PDF EPS PS EPI WEBP WEBPLL JP2 PCX TGA DWG DWF DXF DGN WMZ CGM DRW SHP GBR PCT MIF PLT PCL SVG WPG CIN DCX DIS HRU MTV PRC RAD PIC RLA QRT SGI XBM XPM SWF CAL FAX FITS PSD PGM JXR BPG APNG DDS SVGZ CG4 FLIF AVIF
Advanced users can convert GRO2 files via command-line interface in manual or automated mode. You are welcome to contact our technical support when you have any questions about reaConverter.