Simplex 2 : (ICT) Refers to the direction of data transmission. It may be in both directions at the same time, called duplex or full duplex; in only one direction at a time, called half duplex; or in one direction only, called simplex
Quality Information Agency QIA, National Teaching and Learning Change Programme, Information and Communication Technology (ICT), Dictionary of ICT terms, UK 2015. http://resources4ict.excellencegateway.org.uk/sear ch.php?show=20&letter=a, (Info and Commun Tech - Amer) {245}