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					             Homework 2 Software Development

Complete in your Homework Jotter

Hand in Homework Wednesday 23rd October


Systems

1. Name the bus used to transfer instructions from the Main Memory to
the processor

2. Convert the value 25 into an 8 bit binary number

3. I am writing an App for my iphone that is going to store photographs.
Give 2 examples of Standard File Formats for storing images.

4. The Resolution of the image is changed to make the file size smaller.
Explain why the file size is reduced when the resolution is reduced.

Software Development

5. In every program that you have created this year you have used
Variables. What is a Variable?

6. Give 3 different examples of Variable types that you can use when
programming

7. I want to setup a Variable called Username to store numbers and text.
Can you write the line of code that will create this variable.

8. Explain why the telephone number 07700 901012 should be stored as a
String data type and not a Integer

9. You have a program that takes in the times of runners, for example,
9.65. What variable type would you choose to store this data?

				
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Ian Arthur Ian Arthur
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