| 摘要 |
<p>PURPOSE:To read a data without mistake and improve a reliability by storing the same content data in plural memory elements, reading a data comprising bits judged by taking a decision by majority every bit on a data read from the respective elements to make a data. CONSTITUTION:A data of a parallel bit inputted from a terminal through a data bus 5 is converted into a data of a serial bit by a central processing unit 2, and thereafter distributed to data buses 13-15 by a majority circuit 11. The same address signal is supplied to memory elements 8-10 from the central processing unit 2, and in a designated address, the data from data buses 13-15 are written at the same time. By the address signal from the central processing unit 2, the memory elements 8-10 read the data at the same time from the designated same address and supply to the circuit of decision by majority 11. Every bit, the decision by majority is done, the data is converted into the parallel bits by the central processing unit, and thereafter, fed to the terminal through the data bus 5 as a data read from a data memory 7.</p> |
