PIC Architecture - Electronic Engineering (MCQ) questions & answers

1)   What is the purpose of a special function register SPBRG in USART?

a. To control the operation associated with baud rate generation
b. To control an oscillator frequency
c. To control or prevent the false bit transmission of 9th bit
d. All of the above
Answer  Explanation 

ANSWER: To control the operation associated with baud rate generation

Explanation:
No explanation is available for this question!


2)   Which among the below specified registors are addressable only from bank1 of RFS?

a. PORTA (05H)
b. PORTB (06H)
c. FSR (04H)
d. ADCON0 (07H)
Answer  Explanation 

ANSWER: PORTA (05H)

Explanation:
No explanation is available for this question!


3)   Which register acts as an input-output control as well as data direction register for PORTA in bank 2 of RFS?

a. INDF (80H)
b. TRISB (85H)
c. TRISA (85H)
d. PCLATH (8A)
Answer  Explanation 

ANSWER: TRISA (85H)

Explanation:
No explanation is available for this question!


4)   What is the purpose of acquiring two different bits from INTCON register for performing any interrupt operation in PIC 16C61 / 71?

a. One for enabling & one for disabling the interrupt
b. One for enabling the interrupt & one for its occurrence detection
c. One for setting or clearing the RBIE bit
d. None of the above
Answer  Explanation 

ANSWER: One for enabling the interrupt & one for its occurrence detection

Explanation:
No explanation is available for this question!


5)   Which bit/s should be necessarily cleared in OPTION (SFR) register in order to turn on the weak internal pull-ups of port B?

a. RPO
b. RPBU
c. RBIF
d. All of the above
Answer  Explanation 

ANSWER: RPBU

Explanation:
No explanation is available for this question!


6)   The RPO status register bit has the potential to determine the effective address of______

a. Direct Addressing Mode
b. Indirect Addressing Mode
c. Immediate Addressing Mode
d. Indc. Watchdog Timer (WDT) exed Addressing Mode
Answer  Explanation 

ANSWER: Direct Addressing Mode

Explanation:
No explanation is available for this question!


7)   Which bit permits to enable (if set) or disable (if cleared) all the interrupts in an INTCON register?

a. GIE
b. ADIE
c. RBIE
d. TOIE
Answer  Explanation 

ANSWER: GIE

Explanation:
No explanation is available for this question!


8)   Which flags of status register are most likely to get affected by the single-cycle increment and decrement instructions?

a. P Flags
b. C Flags
c. OV Flags
d. Z Flags
Answer  Explanation 

ANSWER: Z Flags

Explanation:
No explanation is available for this question!


9)   Where is the result stored after an execution of increment and decrement operations over the special - purpose registers in PIC?

a. File Register
b. Working Register
c. Both a & b
d. None of the above
Answer  Explanation 

ANSWER: Both a & b

Explanation:
No explanation is available for this question!


10)   Which instruction is applicable to set any bit while performing bitwise operation settings?

a. bcf
b. bsf
c. Both a & b
d. None of the above
Answer  Explanation 

ANSWER: bsf

Explanation:
No explanation is available for this question!


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