Direct Memory Access
[/dɪˈrɛkt ˈmɛməri ˈækses/]
noun
Acesso Direto à Memória
1. A computer feature that allows certain hardware subsystems to access main system memory independently of the central processing unit (CPU), without requiring CPU intervention for data transfers
The graphics card uses Direct Memory Access to transfer large amounts of texture data directly to RAM without burdening the CPU.
A placa de vídeo usa Acesso Direto à Memória para transferir grandes quantidades de dados de textura diretamente para a RAM sem sobrecarregar a CPU.
2. A technology that enables faster data transfers between peripherals and memory by bypassing the processor
DMA significantly improves I/O performance by allowing devices to read from and write to memory autonomously.
O DMA melhora significativamente o desempenho de E/S permitindo que os dispositivos leiam e gravem na memória autonomamente.
This is specialized technical terminology used primarily in computer science and electrical engineering fields. The term is used identically in both Brazilian Portuguese and European Portuguese technical documentation. In professional and academic contexts, the English acronym 'DMA' is often used interchangeably with the full Portuguese translation 'Acesso Direto à Memória' in both countries.
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