High School Physics

# MCQs on AVR microcontroller, 8255, 8051 – NPTEL assignment

Last updated on March 10th, 2022 at 05:35 pm

This assignment (MCQs on AVR microcontroller, 8255, 8051 – NPTEL assignment) contains 14 MCQs spanned across 3 pages. Links to other pages of this assignment are available at the bottom of each page of this series.

## AVR microcontroller, 8255, 8051 – MCQs

1 ) Which of the following representations related to the AVR microcontrollers is correct?

a) Timer/Counter 0 is an 8-bit up counter and timer/counter 1 is an 8-bit up counter
b) Timer/Counter 0 is an 8-bit up counter and timer/counter 1 is a 16-bit up counter
c) Timer/Counter 0 is a 16-bit up counter and timer/counter 1 is an 8-bit up counter
d) Timer/Counter 0 is a 16-bit up counter and timer/counter 1 is a 16-bit up counter

Timer/Counter 0 is an 8-bit up-counter and timer/counter 1 is a 16-bit up counter

2 ) Which of the following representations related to the AVR microcontrollers is correct?

a) An AVR timer/counter 0 has dual output compares A and B
b) An AVR timer/counter 1 has a single output compare A
c) An AVR timer/counter 1 has a single output compare B
d) An AVR timer/counter 1 has dual output compares A and B

An AVR timer/counter 1 has dual output compares A and B

3 ) Which of the following represents the best description of an AVR timer/counter source when CS02 = 0, CS01 = 1, and CS00 = 1?

a) Stop, the timer/counter is stopped
b) CPU frequency is divided by 8 (CK/8)
c) CPU frequency is divided by 64 (CK/64)
d) CPU frequency is divided by 256 (CK/256)

CPU frequency is divided by 64 (CK/64)

4 ) In an AVR microcontroller, interrupts are used for

See also  The Architecture of 8085 and 8086 - Questions & answers

a) RESET
b) Timers and Time-Critical Code
c) Hardware Signalling
d) All of the above

All of the above

5) Which of the following is the Program Address of the Serial Transfer Complete interrupt in an AVR microcontroller?

a) \$000
b) \$00C
c) \$012
d) \$014