34. The device defined in claim 6 wherein: said look-up table stored in erasable programmable memory capable of being erased and written to by a voltage; said control means also connected to a communication port and said control means capable of reading electric information signals from said communication port, erasing memory locations in said erasable programmable memory and writing said electric information signals into said memory locations.
38. The device defined in claim 34 wherein said communication port is connected to a printer capable of receiving said electric information and printing said electric information in a readable form.