sentences:  "Page mode DRAM" is a minor modification to the first-generation DRAM IC interface which improved the performance of reads and writes to a row by avoiding the inefficiency of precharging and opening the same row repeatedly to access a different column.In Page mode DRAM, after a row was opened by holding low, the row could be kept open, and multiple reads or writes could be performed to any of the columns in the row.Each column access was initiated by asserting and presenting a column address.