| 摘要 |
PURPOSE:To count two-dimensional address easily in a high speed with a hardware circuit, by counting addresses by an adder and a latch. CONSTITUTION:A column index (n) of 2<n> from a column index converter 4 is converted to a bit pattern and is applied to a latch circuit 9 through the first adder 6, and the output of the circuit 9 is added to the adder 6 successively. A carry generator 8 is operated in accordance with a maximum value of addition outputs between the column index (n) and a line index (l) from the second adder 5, and the adder 6 is disconnected from the circuit 9, and the address in each column is counted. By this constitution, two-dimensional addresses are counted easily and quickly with hardware. |
