1. Digit- A digit is a single place that can hold numerical values between 0 and 9.Digits are normally combined together in groups to create larger numbers.
   
2. Base 10-  decimal number system
    
3. Where does the word bit originate from? -
   The word 'bit' was derived from the term binary digit (0 and 1).
4. “normal” -counting numbers used in everyday life a based on what sequence of numbers? The binary number system
5. Examine the tables below

 

Base 10

Place Value	10 000	1 000	100	10	1
Place Value	104	103	102	101	100
Digit	9	0	3	0	2
Digit Value	90 000	0	300	0	2

90 302 (base 10) = (9 x 10000) + (3 x 100) + (2 x 1)

If 6,357 can be written as;

(6 * 1000) + (3 * 100) + (5 * 10) + (7 * 1) = 6000 + 300 + 50 + 7

 

Ø How would you write 4,321

 

(4*1000)+(3*100)+(2*10)+(1*1)

2. Examine the table below

Base 2

Place Value	16	8	4	2	1
Place Value	24	23	22	21	20
Digit	1	0	1	0	0
Digit Value	16	0	4	0	0

10100 (base 2) = (1 x 16) + (1 x 4) = 20 (base 10)

Ø Write the following numbers in binary (base 2)

21

24

30

3. What is a byte?

A group of binary digits or bits (usually eight) operated on as a unit.

3. How many bytes in a kilo, mega, giga and tera bytes.

Kilo: 1024 bytes

Mega: 1 048 576 bytes

Giga: 1 073 741 824 bytes

Tera: 1 099 511 627 776 bytes

3. Complete the following conversions;

1000 Mb = 0.9765625Gb

500 Gb = 512000Mb

5000 Kb = 4.88281Mb