Programmable interface between remote terminals and a computer

摘要: A data receiver providing an intelligent interface for a hand held computerized entry terminal to communicate over telephone lines with host computer. The has multiple microprocessor control line cards connected and interconnected the Each card includes system program in nonvolatile area of memory customer application volatile memory. answers telephone, checks errors provides progress tones line. When terminal, sets baud rate, determines protocol, reformats accordance specifications hands off remote service computer may be each update as well perform diagnostic testing routines