A single instruction to clear the lower four bits of the accumulator in 8085 Assembly language is:

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Important Questions on Computer Organisation

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Objective Computer Awareness>Chapter 15 - Computer Organisation>Computer Organisation>Q 139

Which of the following instructions requires the most number of T-states?

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Objective Computer Awareness>Chapter 15 - Computer Organisation>Computer Organisation>Q 140

The number of RAM Chips of the size (256 K X 1) required to build a 1 MBytes memory is:

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Objective Computer Awareness>Chapter 15 - Computer Organisation>Computer Organisation>Q 141

Consider the following program. Assume that the program is stored in R/W Memory.
Initial condition : (A000H) = 00H
8000 : 31 07 80       LXISP, 8007H
8003 : 3E 76     MVI A, 76H
8005 : F5    PUSH PSW
8006 : 3A 00 A0    LDA A000H
8009 : F1     POP PSW
800A : 3A 00 A0     STA A000H
800D 76   HLT
The content of the location A000H After the execution of the above program is:

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Objective Computer Awareness>Chapter 15 - Computer Organisation>Computer Organisation>Q 142

The