1. An information handling system comprising a plurality of redundant information handling processor channels operating in tight synchronism and each said channel including means for receiving input information from a source associated with said channel and for transmitting said input information to all others of said redundant channels and voting means responsive to said input information and to the input information received from said other channels for providing voted output information in ech channel, the output information in all unfailed channels being identical; a plurality of additional processors, each said channel having one or more of said additional processors connected thereto for further processing the voted output information from said channel, the processed output information from said one or more additional processors of a selected number of said channels being supplied to said plurality of redundant processor channels, the voting means thereof providing voted processed output information in each channel.