MICROCONTROLLER AND EMBEDDED SYSTEM SET-1

 1. Which bits of the PSW register are configurable to select register banks? 

1. PSW.4 and PSW.3
2. Only PSW.4
3. RS2 and RS1
4. PSW.0 and PSW.3 

2. 8051 has _________ status flag registers.

1. 1
2. 2
3. 4
4. 3

3. The _______ directive is always used for ASCII strings.

1. EQU
2. ORG 
3. CHAR 
4. DB

4. With each POP instruction, the SP is _____ (incremented, decremented) by 1. 

1. Incremented 
2. Decremented 

5. PSW represents ___________.

1. Processor status 
2. Program Store Word 
3. Page Size Word 
4. Program Status Word