Engineering Questions with Answers - Multiple Choice Questions

MCQs on TIMER_B

1 - Question

Why Timer_B is not considered as most suitable one for receiving asynchronous signals?
a) because of the absence of the TBOUTH input pin
b) because of the presence of the TBOUTH input pin
c) because of the absence of the SCCI bit
d) because of the presence of the SCCI bit

View Answer

Answer: c
Explanation: The SCCI bit is absent in the Timer_B which means that the sampling mode is absent in it that’s why it is considered as unsuitable for receiving asynchronous signals.




2 - Question

There is double buffering in the immediate mode?
a) true
b) false
c) cant be said
d) depends on the conditions

View Answer
Answer: b
Explanation: Immediate mode offers no double buffering condition. As here, values are copied to TBCLn as soon as they are written to TBCCRn.

 




3 - Question

Double buffering protects channel 0.
a) as it acts as the limit in the Up and up/down modes
b) it doesn’t actually protect it
c) as it does not accept the inputs
d) none of the mentioned

View Answer

Answer: a
Explanation: Double buffering protects channel 0 as it acts as the limit in the Up and Up/Down modes.




4 - Question

Timer_B has _________
a) three serial communication ports
b) seven LCD driver
c) seven compare/capture channels
d) three LED driver ports

View Answer

Answer: c
Explanation: Timer_B has seven compare/capture channels.




5 - Question

The capture/compare registers TBCCRn are double-buffered when used for compare events?
a) true
b) false
c) cant be said
d) depends on the conditions

View Answer

Answer: a
Explanation: The capture/compare registers TBCCRn are double-buffered when used for compare events.




6 - Question

The length of TBR can be programmed to be _________
a) 8 bits
b) 12 bits
c) 16 bits
d) all of the mentioned

View Answer

Answer: d
Explanation: The length of TBR can be programmed to be 8, 12, 16 or 10 bits long.




7 - Question

TBOUTH can pin can be used to _________
a) values are moved from one place to another
b) the length of the number of bits is selected by this register
c) it can be used to put all the outputs of the Timer_B register in the high impedance state
d) it can be used for outputting the input values of the timers

View Answer

Answer: c
Explanation: TBOUTH pin is used to put all the outputs of the Timer_B register in the high impedance state by a high external signal applied to this pin.




8 - Question

TBCLn provided in each channel is actually _________
a) a comparator
b) compare latch
c) controller
d) control logic

View Answer

Answer: b
Explanation: TBCLn is actually a compare latch that is provided in its every channel.




9 - Question

When TBR counts to zero?
a) TBCLn is updated from TBCCRn
b) CLLDx is updated to TBCCTLn
c) CLLDx is updated to TBCCRn
d) TBCLn is updated to CLLDx

View Answer

Answer: a
Explanation: When TBR counts to zero, TBCLn is updated from TBCCRn.

Get weekly updates about new MCQs and other posts by joining 18000+ community of active learners