INTRODUCTION TO MICROPEOCESSOR
MICROCOMPUTER SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It is a command with an opcode of 000 and two fields programmed to select the mode of operation for the 8279.
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Control Word
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Field Set
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Mode Set
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Opcode
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Explanation:
Detailed explanation-1: -Scanned Sensor Matrix : In this mode, a sensor array can be interfaced with 8279 using either encoded or decoded scans.
Detailed explanation-2: -The control and timing registers store the keyboard and display modes and other operations programmed by CPU.
Detailed explanation-3: -Display Scan: The 8279 generates 8 or 16 characters multiplexed displays that are organized in either dual 4-bit or single 8-bit display units. Display Entry: The data which gets displayed can be either displayed starting from either the right side or left side.
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