Abstract: Apparatus for converting a train of code signals representative of a letter, number, or symbol to a visual display of such corresponding letter, number, or symbol. The train of signals includes individual signals of at least two distinct time durations, the length of the time durations being dependent upon the proficiency of the operator initiating the signals. In the signal converting apparatus, a clock signal of a preselected time duration is produced. The time relation of each of the signals in the train of signals is resolved in relation to the clock signal. A first signal is produced if the signal being resolved is less than the clock signal, and a second signal is produced if the signal being resolved is greater than the clock signal. An addressor receives the first and second signals and stores the signals to generate a given address dependent upon the particular first and second signals and the order those signals are received. The addressor produces a signal indicative of the given address.