Negotiation and U.S. ratification. Back row, left to right: Mexican President Carlos Salinas de Gortari, U.S. President George H. W. Bush, and Canadian Prime Minister Brian Mulroney, at the initialing of the draft North American Free Trade Agreement in October 1992.
Direct memory access. Direct memory access (DMA) is a feature of computer systems that allows certain hardware subsystems to access main system memory (RAM), independent of the central processing unit (CPU).
On Oct. 1, 1996, DMA was folded into the National Imagery and Mapping Agency â which later became NGA. DMA was first headquartered at the United States Naval Observatory in Washington, D.C, then at Falls Church, Virginia.