8255 PPI Explained | How CPU Interfaces with External Devices
1:31
YouTubeDismantleNano
8255 PPI Explained | How CPU Interfaces with External Devices
The 8255 Programmable Peripheral Interface allows a CPU to communicate with external input and output devices. This video explains: • Purpose of the 8255 • Internal block diagram • Port structure and pin functions • Control word format • How CPU programs and uses 8255 The explanation uses a robust blueprint-style hardware diagram.
54 views4 months ago
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8255 Control Word Explained | Port Configuration | 8086 Microprocessor
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