| 摘要 |
PURPOSE:To improve the reliability by providing plural parity bits to data of one unit so as to make the titled interface immune to various noises. CONSTITUTION:An exclusive OR circuit EXOR30 ORs exclusively one bit in a high-order 4-bit of a data register 10, one bit in a low-order 4-bit and one bit in 4-bit stored in a parity pattern register 20, the result is outputted as 4-bit information. A transmission shift register 40 receives an 8-bit data from a register 10, a 4-bit from the EXOR30 and a stop bit SP and the information is transmitted at each 1 bit. |
