1.4.1 Data types - Suprit

Question 1

Define Real Numbers

Answer 1

Positive or negative numbers that typically have a decimal point

Question 2

Define Integer

Answer 2

A whole number

Question 3

Define Characters

Answer 3

Any symbol used by the computer

Question 4

Define String

Answer 4

A collection of characters stored in succession

Question 5

Define Boolean

Answer 5

Represents True or False

Question 6

How do computers store whole numbers?

Answer 6

Computers store whole numbers as binary

Question 7

How many bits make up a nibble?

Answer 7

4 bits

Question 8

How many nibbles make up a byte?

Answer 8

2 nibbles

Question 9

Convert binary number 1101 to denary

Answer 9

13

Question 10

How many bits in a kilobyte?

Answer 10

8000

Question 11

Convert 47 into binary

Answer 11

101111

Question 12

What is 1011 + 1110?

Answer 12

(1)1001
(1) is an overflow

Question 13

What does 0 and 1 at the start of a binary number represent in Sign Magnitude?

Answer 13

0 = Positive Number
1 = Negative Number

Question 14

If 10101101 = 173, what does Sign Magnitude number 010101101 mean in denary?

Answer 14

It’s also 173

Question 15

Convert -105 to a Sign Magnitude number

Answer 15

101101001

Question 16

What is another way to represent positive and negative numbers in binary?

Answer 16

Two’s Complement

Question 17

How do you convert a binary number into Two’s Complement?

Answer 17

Flip all of the individual bits and add 1
Example - 00000111 (7) becomes 11111000 when its initially flipped, and becomes 11111001 (-7) once 1 has been added on.

Question 18

How does subtraction work in Two’s Complement?

Answer 18

It works by adding a negative number to a positive number

Question 19

Subtract 10100 from 01000 in Two’s Complement.

Answer 19

11100 (-4)

Question 20

What base is Hexadecimal?

Answer 20

Base 16