Fault-tolerant digital computer circuit - has normal function blocks and redundant function blocks with switching control

摘要

The fault-tolerant digital device possesses a number of normal function blocks (B1...,C1...,..D5..) and also redundant function blocks which can be switched in by a control unit (S) instead of a faulty normal block when a fault has been detected in one of the normal blocks. The normal function blocks are combined into groups (B,C,D) of different blocks with similar basic functions and each group is provided with a superblock (BS,CS,DS) constructed so that it can perform the function of each of the normal blocks of a group, when it receives the input signals of the blocks of its group. The inputs of consecutive function blocks are connected with the outputs of the associated function blocks and in addition with the outputs of the superblocks assigned to the blocks and can be switched between them. USE/ADVANTAGE - The advantage is an improvement in flexibility. It is suitable for computer systems.