P2 T1 L3 - 2's Comlement

Question 1

Give the names, symbols and powers for the (4) binary prefixes

Answer 1

1. kibi - Ki - 2^10
2. mebi - Mi - 2^20
3. gibi - Gi - 2^30
4. tebi - Ti - 2^40

Question 2

Give the names, symbols and powers for the (4) decimal prefixes

Answer 2

1. kilo - K- 10^3
2. mega - M - 10^6
3. giga - G - 10^9
4. tera - T - 10^12

Question 3

Quantities of _____ can be described using:

______ prefixes representing powers of 2
OR
______ prefixed representing powers of 10

Answer 3

bytes

binary

decimal

Question 4

Generally, hardware devices use ______ units while software uses _____.

Answer 4

decimal

binary

Question 5

The leftmost bit is often referred to as the _____ significant bit.

The rightmost bit is often referred to as the ______ significant bit.

Answer 5

most (MSB)

least (LSB)

Question 6

(Two’s Complement)

The ___, the ‘sign’, indicates whether the number is positive or negative. (0 is positive, 1 is negative)

Besides being a sign the ___ also has a value.

Answer 6

MSB

MSB

Question 7

State the decimal value of 1111 in two’s complement

Answer 7

-1

Question 8

4 steps to translate NEGATIVE 2’s complement number to denary

Answer 8

1. flip the bits (0-1,1-0)
2. Translate into denary
3. Add 1 to the result
4. make the number negative

Question 9

3 steps to translate NEGATIVE denary to 2’s complement

Answer 9

1. Find the binary value of the equivalent positive denary number
2. Flip the bits
3. Add 1 to the result