References

Longhorn Computer studies form 1

Log On computer studies students Book 1

https://www.google.com/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&ved=2ahUKEwjApNTd8czjAhUmyIUKHTu2CnMQjRx6BAgBEAQ&url=%2Furl%3Fsa%3Di%26rct%3Dj%26q%3D%26esrc%3Ds%26source%3Dimages%26cd%3D%26ved%3D%26url%3Dhttps%253A%252F%252Fslideplayer.com%252Fslide%252F5764182%252F%26psig%3DAOvVaw2IkasuQVWZW205DzsaxyNP%26ust%3D1564034603839039&psig=AOvVaw2IkasuQVWZW205DzsaxyNP&ust=1564034603839039

https://www.google.com/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&ved=2ahUKEwjb3LLN88zjAhVQPBoKHYQADMIQjRx6BAgBEAQ&url=http%3A%2F%2Fwww.frostytech.com%2Farticleview.cfm%3Farticleid%3D2231%26page%3D3&psig=AOvVaw0bR4xD10D8SeXgIA9TNHuf&ust=1564035141629400

https://www.youtube.com/watch?v=SSght6ByxE8

https://www.youtube.com/watch?v=7uHo08bZnRg