MICROPROCESSOR AND MICROCONTROLLER

INTRODUCTION TO MICROPEOCESSOR

MICROCOMPUTER SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
This is an 8279 pin configuration that enables the 8279 for programming, reading the keyboard and status information, and writing control and display data
A
Blank
B
Chip Select
C
Control/Strobe
D
Interrupt Request
Explanation: 

Detailed explanation-1: -CS(CHIP SELECT) When this pin is low MP will write data or control words into the 8279. A0-When it is high it indicates the transfer of a command or status info.

Detailed explanation-2: -The control and timing registers store the keyboard and display modes and other operations programmed by CPU.

There is 1 question to complete.