Y10 Revision Lesson

​Do Now:

​ 1. Log in

2. Go to class notebook

3. Complete Do Now.

​Do Now Answers

​Revision Lesson:

• ​Binary & Hex conversion

• Binary Addition & Shifts

• Run Length Encoding

• Images & Sounds

• Units of information conversion

• System Architecture

​Binary & Hex conversion

​Convert the following from binary to denary/decimal

01101110

​Binary & Hex conversion

​Convert the following from binary to denary/decimal

01101110

01010011 

​Binary & Hex conversion

​Convert the following from binary to denary/decimal

01101110

01010011 

00111110 

Multiple Choice

Convert 10000001 to denary

• 128

• 256

• 129

• 1000002

​Binary & Hex conversion

​Other way around. Converting Denary to Binary

Convert 32 to Binary

​Binary & Hex conversion

​Other way around. Converting Denary to Binary

Convert 32 to Binary

Convert 129 to Binary

​Binary & Hex conversion

​Other way around. Converting Denary to Binary

Convert 32 to Binary

Convert 129 to Binary

Convert 70 to Binary

Multiple Choice

Convert 40 to Binary

• 00111000

• 00011100

• 11010111

• 00101000

​Adding Binary

​11110000

00001111

​Adding Binary

​0000

1111

​Adding Binary

​11110000

00001111

​11111111

00000001

​Complete Activity 1

Run Length Encoding

Run Length Encoding

​2W 6B

2W 6B

2W 2B 6W

8B

2W 8B

2W 2B 6W

2B 6W

2B 4W

​Complete Activity 2

​Analogue to Digital Converter

​Sample Rate:

​How often (frequency) you record the amplitude of a sound wave.

The more often you record a sample the smoother the playback will sound​

Multiple Choice

The amount of bits allocated per sample is called the

• bit rate

• sample rate

• bit depth

• bit sample

Multiple Choice

The bit rate is calculated using..

• Sampling Frequency x Sample Size

• Whole sample size x sample depth

• sample height x width

​Calculating file size

​Size of sample =

(number of samples per second) x (number of bits per sample) x (length of sample in seconds)

sample rate x bit depth x time​

​Calculating file size

​Size of sample =

(number of samples per second) x (number of bits per sample) x (length of sample in seconds)

sample rate x bit depth x time​