| 摘要 |
PURPOSE:To greatly reduce the hardware quantity, by using the common hardware to read the dot information out of a pattern memory in the case of both the vertical print and the horizontal print. CONSTITUTION:A counter group 3 includes a row address counter, a column address counter and a bit address counter that designates the bit position within a word. A counter control circuit 2 changes the longitudinal connection of the group 3 according to the vertical print or the horizontal print. An address converting circuit 4 produces a pattern memory reading address corresponding to the connection of the contents of the row and column address counters. Then a data selecting circuit 7 selects a bit out of the data read out of a pattern memory 6 based on the contents of the bit address counter. |
