INTRODUCTION TO MICROPEOCESSOR
MICRO PROCESSOR AND MICRO CONTROLLER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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INTA
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INTR
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RD
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ALE
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Detailed explanation-1: -Assertion (A): In 8085 WR and RD signals are active high. Reason (R): LOW WR means write operation and low RD means read operation. Explanation: WR and RD are active low.
Detailed explanation-2: -RD − This signal indicates that the selected IO or memory device is to be read and is ready for accepting data available on the data bus. WR − This signal indicates that the data on the data bus is to be written into a selected memory or IO location.
Detailed explanation-3: -The 8085 is an 8-bit microprocessor designed by Intel in 1977 using NMOS technology that can address 64K Byte of memory. It has 40 pins DIP (Dual Inline Package) IC.
Detailed explanation-4: -The Pin 30 of 8051 microcontroller is used for ALE that is Address Latch Enable. It is an active-high input control signal.