# Assignment 05

Topics: Open source, Microsoft Office, Free software Pages: 3 (1124 words) Published: May 13, 2013
Question 1a)
i.Gigabytes (GB) = 4570

34000000 x 141 = 4794000000
4794000000/1024 = 4681640.625
4681640.625/1024 = 4.464760423
3 significant figures = 4570

ii.Bytes = 4.91

4570 x 1024^3 = 4.907000136
Scientific Notation = 4.91

Question 1b)
30 days of tweets could be stored on a 1 terabyte hard disk.

1 Terabyte (TB) = 1024 Gigabytes and = 1 million Megabytes
34000000/100,000,000 = 0.34
Nearest whole number = 30

Question 1c)
i.The percentage increase in tweets per day, is 20.7%

200,000,000 - 65,000,000 = 135,000,000
135,000,000/65,000,000 x 100% = 20.7

ii. If the percentage increase in traffic between 2010 and 2011 remains steady each year, I predict 150,000,000 tweets will be sent per day. My prediction may be inaccurate because-: 1.More or less people will tweet, so the figures will change. 2.Almost every day hundreds of people join twitter, so that means more tweets, so my prediction may be wrong.

DeviceTime per week, on and active (hours)Time per week, on but inactive (hours)Time per week, on standby (hours)Time per week, off (hours)Total energy used per week (kWh)Cost per year (£) Computer box 5 201630.45£164.25

Laptop computer 15 001532.25£821.25
TV 30 101304.50£450
Question 1d)
Question 2
Hello Meg la Maniac,

Firefox and Linux are the most well known open source projects, but there are many more, these projects are very successful without having a high public profile. Open Source allows people to build freely on the work of others without constraint, but this doesn't mean that copyright and licensing is unnecessary, because in fact it is, open source products need protection. The main difference between Open Source and proprietary software is that open source is cost free. There aren't any hidden costs, you are able to modify and redistribute Open Source free of charge. I understand that you would like to replace Microsoft Office...