MULTIPLEX PARALLELLSERIAL CONVERSION SYSTEM USING MEMORY

摘要

PURPOSE:To carry out a collective parallel-serial conversion process for a number of circuits by reading the parallel data of the circuits supplied into the memory based on a fixed rule and then converting the data into the information of the parallel circuit and the serial data to secure a collective parallel-serial conversion for a number of circuits. CONSTITUTION:The signals of data writing means 21-1 and 21-2 which write the data given from outside in series into each circuit parallel bit are supplied for writing to either one of two pairs of memories 22-1 and 22-2. And the data written into the other side of the two pairs of the memories is read out through data reading means 23-1 and 23-2 by one bit corresponding to each circuit. This reading output is assembled into the word composed of the bit corresponding to each circuit through shift register 26 and then delivered from output memory 27 in the from of 1-bit parallel signal of each circuit. The two pairs of memories 22 are combined by the mutual switching between data writing means 21 and data reading means 23. In such way, a collective parallel-serial conversion is ensured for a number of circuits.