Show the results of the following: (i) ``assembly MOV A, #35H ANL A, 0FH ` (ii) `assembly MOV A, #04H ORL A, 03H ` (iii) `assembly MOV A, #54H XRL A,

Question

**Show the results of the following:**

(i)
```assembly
MOV A, #35H
ANL A, 0FH
```
(ii)
```assembly
MOV A, #04H
ORL A, 03H
```
(iii)
```assembly
MOV A, #54H
XRL A, A
```
(iv)
```assembly
CLR C
MOV A, #26H
RRC A
```

Accepted Answer

**Results of Given Instructions**

(i) `MOV A,#35H; ANL A,0FH`  → A=35H & 0FH = 05H. Result A=05H, upper nibble masked.

(ii) `MOV A,#04H; ORL A,03H` → 04H | 03H = 07H. A=07H (00000100 OR 00000011=00000111).

(iii) `MOV A,#54H; XRL A,A` → Any value XOR itself = 00H. A=00H, zero flag implied but flags unchanged for logic? Actually XRL affects? In 8051 logic ops do not affect CY/OV, but parity updated.

(iv) `CLR C; MOV A,#26H; RRC A` → A=26H=00100110B, C=0. RRC = rotate right through carry: new C= A0 (=0), A = (C old) concatenated >>1 = 0 0010011 = 13H. So **A=13H, CY=0**. If C started 0, result 13H. (If second rotation after? No). If assuming CLR C then RRC: A = 13H, C=0.

Summary table:
(i) 05H, (ii) 07H, (iii) 00H, (iv) 13H, CY=0.

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