Computer Organization and Architecture-Machine Instructions and Addressing Modes [GATE (Graduate Aptitude Test in Engineering) Computer Science & IT (CS)]: Questions 1 - 6 of 74
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Question 1
Question MCQ▾
The ALE line of an 8085 microprocessor is used to?
Choices
Choice (4) | Response | |
---|---|---|
a. | Executes the instruction supplied by external device through the INTA signal | |
b. | Executes a NOP | |
c. | Executes an instruction from memory location 20 H | |
d. | Execute an RST by hardware |
Question 2
Question MCQ▾
Which of the following is the largest manufacturer of Hard Disk Drives?
Choices
Choice (4) | Response | |
---|---|---|
a. | 3M | |
b. | Micromax | |
c. | IBM | |
d. | Seagate |
Question 3
Appeared in Year: 2015
Question MCQ▾
What will be the output at PORT1 if the following program is executed?
MVI B, 82H
MOV A, B
MOV C, A
MVI D, 37H
OUT PORT1
HLT
Choices
Choice (4) | Response | |
---|---|---|
a. | B9H | |
b. | 37H | |
c. | 00H | |
d. | 82H |
Question 4
Appeared in Year: 2016
Question MCQ▾
The content of the accumulator after the execution of the following 8085 assembly language program, is:
MVI A, 42H
MVI B, 05H
UGC:ADD B
DCR B
JNZ UGC
ADI 25H
HLT
Choices
Choice (4) | Response | |
---|---|---|
a. | 82 H | |
b. | 47 H | |
c. | 76 H | |
d. | 78 H |
Question 5
Appeared in Year: 2016
Question MCQ▾
Which of the following in 8085 microprocessor performs
Choices
Choice (4) | Response | |
---|---|---|
a. | DAD SP | |
b. | DAD H | |
c. | DAD D | |
d. | DAD B |
Question 6
Appeared in Year: 2011
Question MCQ▾
CPU does not perform the operation (December Paper II)
Choices
Choice (4) | Response | |
---|---|---|
a. | arithmetic operation | |
b. | data transfer | |
c. | logic operation | |
d. | None of the above |