Match List - I with List - II : List - I List - II (A) SZA (I) Increment M and…
2023
Match List - I with List - II :
List - I List - II
(A) SZA (I) Increment M and skip it zero
(B) SKI (II) Skip if AC is negative
(C) SNA (III) Skip if input flag is on
(D) ISZ (IV) Skip if AC is Zero
Choose the correct answer from the options given below:
- A.
(A)-(II),(B)-(IV),(C)-(I),(D)-(III)
- B.
(A)-(IV),(B)-(III),(C)-(II),(D)-(I)
- C.
(A)-(IV),(B)-(II),(C)-(I),(D)-(III)
- D.
(A)-(III),(B)-(IV),(C)-(II),(D)-(I)
Attempted by 83 students.
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Correct answer: B
Correct matching: Match each mnemonic with its meaning and a brief reason.
SZA -> Skip if AC is Zero. This instruction checks the accumulator and skips the next instruction when the accumulator equals zero.
SKI -> Skip if input flag is on. This instruction tests the input-ready flag and skips when that flag is set.
SNA -> Skip if AC is Negative. This instruction checks the sign of the accumulator and skips when it is negative.
ISZ -> Increment memory and skip if it becomes zero. This instruction increments the specified memory location and skips the next instruction if that memory location becomes zero after incrementing.
Therefore, choose the matching that pairs SZA with 'Skip if AC is Zero', SKI with 'Skip if input flag is on', SNA with 'Skip if AC is Negative', and ISZ with 'Increment memory and skip if it becomes zero'.
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