Microprocessors And Microcontrollers - Study Mode

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[#201] In 8086, if the content of the code segment register is 1 FAB and the content of the IP register is 10A1, then the effective memory address is

(A) 20B51

(B) 304C

(C) FBC0

(D) FDB5

Correct Answer

(A) 20B51

[#202] Which instruction in an 8085 processor can set a flag?

(A) MOV B, C

(B) JNZ 21 00 H

(C) STA 20 00 H

(D) ADD B

Correct Answer

(D) ADD B

[#203] Microprocessor 8085 is the enhanced version of the following with essentially the same construction set

(A) 6800

(B) 68000

(C) 8080

(D) 8000

Correct Answer

(C) 8080

[#204] Consider the following instructions of 8085 microprocessor 1. MOV B, C 2. STA address 3. ORI byte The correct sequence in the decreasing order of their respective memory space requirement is

(A) 3, 2 and 1

(B) 1, 3 and 2

(C) 1, 2 and 3

(D) 2, 3 and 1

Correct Answer

(D) 2, 3 and 1

[#205] In 8053/8054 timer, how many independent counters are available?

(A) 2

(B) 3

(C) 4

(D) 5

Correct Answer

(B) 3