Ch 4

Question 1

What is the informal name for performing bit level manipulations using bitwise logical functions?

Answer 1

Bit Twiddling

Question 2

What operator is used with a but mask(1«i) to turn a bit ON( set it to 1) without affecting others?

Answer 2

OR(|)

Question 3

What operators are combined with a bitmask~(1«i) to turn a bit off , clear it to 0) without affecting others?

Answer 3

And(&) is combined with the outside or

Question 4

What operator is used with a bit mask(1«i) to flip a bits state to toggle it

Answer 4

XOR(^)

Question 5

Why is the first pin/LED in a bank referred to as Number Zero?

Answer 5

Because C code uses zero-indexing( starting counts and array positions at 0)

Question 6

What is the informal name for performing bit-level manipulations using bitwise logical functions?

Answer 6

Bit twiddling

Question 7

What operator is used with a bitmask(1«i) to turn a bit on (set it to 1) without affecting others?

Answer 7

OR(|)-used for setting bits

Question 8

What operators are used with a bitmask (1«i) to turn a bit off( clear it to 0) without affecting others?

Answer 8

And(&) and Not(~)

Question 9

What operator is used with a bitmask(1«i) to flip a bits state(to toggle it)?

Answer 9

XOR(^)

Question 10

Why is the first pin/LED in the bank referred to as Number Zero(eg PB0)?

Answer 10

Because c code uses zero-indexing where it starts counting positions at 0

Question 11

Or

Answer 11

Is used for setting a bit to one and and is used for checking a bit and clearing