UGC NET CSE | December 2023 | Part 2 | Question: 67

Question

Match $\text{List - I}$ with $\text{List - II}$.

$$\begin{array}{llll}
& \text{List - I} & & \text{List - II} \\
\text{(A)} & \text{SZA} & \text{(I)} & \text{Increment M and skip it zero} \\
\text{(B)} & \text{SKI} & \text{(II)} & \text{Skip if AC is negative} \\
\text{(C)} & \text{SNA} & \text{(III)} & \text{Skip if input flag is on} \\
\text{(D)} & \text{ISZ} & \text{(IV)} & \text{Skip if AC is Zero}
\end{array}$$

Choose the correct answer from the options given below:

• A. $\text{(A)-(II), (B)-(IV), (C)-(I), (D)-(III)}$
• B. $\text{(A)-(IV), (B)-(III), (C)-(II), (D)-(I)}$
• C. $\text{(A)-(IV), (B)-(II), (C)-(I), (D)-(III)}$
• D. $\text{(A)-(III), (B)-(IV), (C)-(II), (D)-(I)}$

Answer 1

✅ (A) SZA → Skip if AC is Zero

Full form = SZA = Skip on Zero AC

Operation:

If AC=0⇒PC←PC+1

➡️ Matlab: Accumulator zero ho to next instruction skip hoti hai
✅ Exactly matches (IV)

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✅ (B) SKI → Skip if Input Flag is ON

Full form = SKI = Skip on Input Flag

Operation:

If FGI=1⇒PC←PC+1

➡️ Matlab: Input device ready hai to instruction skip hoti hai
✅ Exactly matches (III)

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✅ (C) SNA → Skip if AC is Negative

Full form = SNA = Skip on Negative AC

Operation:

If AC(15)=1⇒PC←PC+1

➡️ Sign bit = 1 ⇒ number negative
✅ Exactly matches (II)

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✅ (D) ISZ → Increment M and Skip if Zero

Full form = ISZ = Increment and Skip if Zero

Operation:

M←M+1M \leftarrow M + 1M←M+1 If M=0⇒PC←PC+1

➡️ Matlab: Memory increment karo, agar zero ho jaye to instruction skip karo
✅ Exactly matches (I)   

OPTION -> B