| | There are two basic modes of operation of 8255, They are: 1. I/O mode. 2. BSR mode. In I/O mode, the 8255 ports work as programmable I/O ports, while In BSR mode only port C (PC0-PC7) can be used to set or reset its individual port bits. Under the ... | Posted By:Noah Evans Posted On: Jan 08 |
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