The integrated circuit contains memory, a 128 ASCII ROM decoder, multiplexing circuitry and drivers. Data entry is asynchronous. A display system can be built using any number of SLR/SLO/SLG/SLY2016 since each digit can be addressed independently and will continue to display the character last stored until replaced by another. System interconnection is very straightforward. Two address bits (A0, A1) are normally connected to the like-named inputs of all displays in the system.