| 摘要 |
PURPOSE:To eliminate circuits of address decoders for random access in row and column directions by providing a cell array where cells are arranged in a matrix, and a means which shifts stored contents of the cell array in column and row directions by one cell. CONSTITUTION:In case of the access in the row direction, a row input/output buffer 12 is made operatable by a row shift control line 41 to shift stored contents of a cell array 2 in the column direction by one cell. Consequently, data is written in and read from cells of rows in one end and the other through a row data signal line 22, the buffer 12, and a data line 34. In case of the access in the column direction, a column input/output buffer 14 is made operatable by a column shift control line 42, and stored contents of the cell array 2 are shifted in the row direction by one cell. Consequently, data is written on and read from cells of columns in one end and the other through a column data signal line 24, the buffer 14, and the data line 34. |
