MICROCONTROLLER AND EMBEDDED SYSTEM SET-7

1. How many bytes are used by the following? DATA 1: DB "AMERICA"

1. 8 BIT
2. 8 BYTE
3. 7 BYTE
4. 7 BIT

2. The _____ directive is always used for ASCII strings.

1. EQU
2. END
3. ORG
4. DB

3. Which bits of the PSW register are user-definable?

1. PSW 1 AND PSW 5
2. PSW 2 AND PSW 4
3. PSW 3 AND PSW 4
4. NONE

4. Find the CY and AC flag bits for the following code. 

MOV A,#OFEH 

ADD A, #01 

1. CY = 0, AY = 1
2. CY = 0, AY = 0
3. CY = 1, AY = 0
4. CY = 1, AY = 1

5. Which register bank is used if we alter RS0 and RS1 of the PSW by the following two instructions?

SETB PSW. 3 

SETB PSW. 4 

1. Register Bank 0 
2. Register Bank 1 
3. Register Bank 3
4. Register Bank 2