World Wide Web Consortium W3C World Wide Web   wireless application protocol WAP what you see is what you get WYSIWYG Web WWW, W3 virtual private network VPN universal serial bus USB universal mobile telecommunications system UMTS uniform resource locator URL transmission control protocol / Internet protocol TCP/IP transmission control protocol TCP tagged image file format TIFF subscriber identity module sim standard generalised markup language SGML small computer system interface SCSI simple mail transfer protocol SMTP short message service SMS read only memory ROM RAW RAW random access memory RAM Quick response QR post office control POP portable network graphics PNG portable document format PDF point to point protocol PPP