UNIT 2

UNIT 2

University

10 Qs

quiz-placeholder

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UNIT 2

UNIT 2

Assessment

Quiz

Engineering

University

Practice Problem

Hard

Created by

pratibha Patil

Used 5+ times

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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

1. Which of the following is the correct syntax for setting a specific bit in an I/O port register in embedded C?

PORTx |= (1 << 3);

PORTx &= ~(1 << 3);

PORTx = (1 << 3);

PORTx |= (1 << 0);

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In embedded C programming, how do you clear a bit (set it to 0) in an I/O port register?

PORTx |= (1 << 3);

PORTx &= ~(1 << 3);

PORTx = (1 << 3);

PORTx ^= (1 << 3);

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the result of the following code in embedded C: PORTB |= (1 << PB2);?

It clears the bit 2 of PORTB.

It sets the bit 2 of PORTB.

It toggles the bit 2 of PORTB.

It does nothing to PORTB.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In which I/O direction mode do the I/O pins act as input in a microcontroller?

Output mode

Input mode

Floating mode

Tri-state mode

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary function of a Timer/Counter in embedded systems?

To generate PWM signals.

To create delays and manage timing events.

To control the direction of data flow in I/O ports.

To perform analog-to-digital conversions.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

n embedded C, to set the value of the timer for a 1-second delay with an 8-bit timer, assuming a 16 MHz clock and a prescaler of 256, the value of the timer register should be set to:

0x00

0xF4

0x02

0xFF

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you stop the Timer in most embedded systems?

Set the timer's prescaler to zero.

Clear the timer enable bit.

Reset the timer register.

Disable the interrupt associated with the timer.

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