Keyboard / Display - 8279SNS COLLEGE OF ENGINEERING* The INTEL 8279 is specially developedfor interfacing keyboard and display devicesto 8085/8086 microprocessor basedSystem. 1S.NATARAJAN/MPMC/I/O & MEMORY INTEFACING / unit -3 System.Features of 8279* Simultaneous keyboard and display Operations•Scanned keyboard mode• Scanned sensor mode•8-character keyboard FIFO• 1 6-character display

SNS COLLEGE OF ENGINEERINGS.NATARAJAN/MPMC/I/O & MEMORY INTEFACING / unit -3 2

Important BlockSNS COLLEGE OF ENGINEERING•Keyboard section• Display section• Scan section S.NATARAJAN/MPMC/I/O & MEMORY INTEFACING / unit -3 • Scan section• CPU interface section 3

SNS COLLEGE OF ENGINEERINGS.NATARAJAN/MPMC/I/O & MEMORY INTEFACING / unit -3 4

SNS COLLEGE OF ENGINEERINGS.NATARAJAN/MPMC/I/O & MEMORY INTEFACING / unit -3 5

Important BlockSNS COLLEGE OF ENGINEERINGS.NATARAJAN/MPMC/I/O & MEMORY INTEFACING / unit -3 6

Display SectionSNS COLLEGE OF ENGINEERINGS.NATARAJAN/MPMC/I/O & MEMORY INTEFACING / unit -3 7

Scan SectionSNS COLLEGE OF ENGINEERINGS.NATARAJAN/MPMC/I/O & MEMORY INTEFACING / unit -3 8

CPU Interface SectionSNS COLLEGE OF ENGINEERINGS.NATARAJAN/MPMC/I/O & MEMORY INTEFACING / unit -3 9

CPU Interface SectionSNS COLLEGE OF ENGINEERINGS.NATARAJAN/MPMC/I/O & MEMORY INTEFACING / unit -3 10

Command wordSNS COLLEGE OF ENGINEERINGS.NATARAJAN/MPMC/I/O & MEMORY INTEFACING / unit -3 11

Command word for KeyboardSNS COLLEGE OF ENGINEERINGS.NATARAJAN/MPMC/I/O & MEMORY INTEFACING / unit -3 12