standards 20 & 21

Standard 20) Demonstrate basic procedures to manage digital files. Describe file storage in memory cards and estimate the number of photographs a memory card can hold based on the resolution of the photographs and other factors. Use a scanner to create digital files. Explain appropriate resolutions for various applications such as printed and web media. Use file system folders to organize files. Utilize online file management services to backup files. (TN Reading 2, 3, 4; TN Writing 4, 6; TN Math N-Q)

What I Want You to Know

Standard 20

How to manage digital files

How to use a scanner to create digital files

How to determine the best resolution for digital files used for print and web mediaAssignment:

Assignment
Read the information below for the answer to question 1:

Question 1. How many photos can an 8GB SD card hold if all the photos are 5MB jpeg images?

Megabytes, Gigabytes, Terabytes... What Are They?

These terms are usually used in the world of computing to describe disk space, or data storage space, and system memory. For instance, just a few years ago we were describing hard drive space using the term Megabytes. Today, Gigabytes is the most common term being used to describe the size of a hard drive. In the not so distant future, Terabyte will be a common term. But what are they? This is where it gets quite confusing because there are at least three accepted definitions of each term.


According to the IBM Dictionary of computing, when used to describe disk storage capacity, a megabyte is 1,000,000 bytes in decimal notation. But when the term megabyte is used for real and virtual storage, and channel volume, 2 to the 20th power or 1,048,576 bytes is the appropriate notation. According to the Microsoft Press Computer Dictionary, a megabyte means either 1,000,000 bytes or 1,048,576 bytes. According to Eric S. Raymond in The New Hacker's Dictionary, a megabyte is always 1,048,576 bytes on the argument that bytes should naturally be computed in powers of two. So which definition do most people conform to?


When referring to a megabyte for disk storage, the hard drive manufacturers use the standard that a megabyte is 1,000,000 bytes. This means that when you buy an 250 Gigabyte Hard drive you will get a total of 250,000,000,000 bytes of available storage. This is where it gets confusing because Windows uses the 1,048,576 byte rule so when you look at the Windows drive properties a 250 Gigabyte drive will only yield 232 Gigabytes of available storage space, a 750GB drive only shows 698GB and a One Terabyte hard drive will report a capacity of 931 Gigabytes. Anybody confused yet? With three accepted definitions, there will always be some confusion so I will try to simplify the definitions a little.


The 1000 can be replaced with 1024 and still be correct using the other acceptable standards. Both of these standards are correct depending on what type of storage you are referring.

Processor or Virtual Storage· 1 Bit = Binary Digit
· 8 Bits = 1 Byte
· 1024 Bytes = 1 Kilobyte 
· 1024 Kilobytes = 1 Megabyte 
· 1024 Megabytes = 1 Gigabyte 
· 1024 Gigabytes = 1 Terabyte 
· 1024 Terabytes = 1 Petabyte 
· 1024 Petabytes = 1 Exabyte
· 1024 Exabytes = 1 Zettabyte 
· 1024 Zettabytes = 1 Yottabyte 
· 1024 Yottabytes = 1 Brontobyte
· 1024 Brontobytes = 1 Geopbyte

Disk Storage

· 1 Bit = Binary Digit
· 8 Bits = 1 Byte
· 1000 Bytes = 1 Kilobyte 
· 1000 Kilobytes = 1 Megabyte 
· 1000 Megabytes = 1 Gigabyte 
· 1000 Gigabytes = 1 Terabyte 
· 1000 Terabytes = 1 Petabyte 
· 1000 Petabytes = 1 Exabyte
· 1000 Exabytes = 1 Zettabyte 
· 1000 Zettabytes = 1 Yottabyte 
· 1000 Yottabytes = 1 Brontobyte
· 1000 Brontobytes = 1 Geopbyte

Question 2. What is the optimum resolution for a digital file that will be printed, such as a magazine or a photograph? What is the best resolution for an image that will be on a website? Think critically: Why is this important?

Standard 21) Distinguish between the various software used for visual design, including page layout software, illustration software, photo editing software, and web publishing software. Describe and illustrate the difference between raster and vector graphics. Create a chart or infographic explaining the major types and uses of design software. Employ the appropriate software to complete assigned tasks. (TN Reading 2, 3, 4; TN Writing 4, 6, 9; TN Math N-Q)

What I Want You to Know

The names of  different industry standard software used for page layout, illustration, photo editing, and web design

Assignment
1. Go to:
http://www.adobe.com/products/catalog.html

List the industry standard software for:

Page layout

Illustration

Photo editing and digital imaging

Web publishing

2. How are raster and vector graphics different?
The difference between vector and raster graphics is that raster graphics are composed of pixels, while vector graphics are composed of paths. A raster graphic, such as a gif or jpeg, is an array of pixels of various colors, which together form an image. A vector graphic, such as an .eps file or Adobe Illustrator? file, is composed of paths, or lines, that are either straight or curved. The data file for a vector image contains the points where the paths start and end, how much the paths curve, and the colors that either border or fill the paths. Because vector graphics are not made of pixels, the images can be scaled to be very large without losing quality. Raster graphics, on the other hand, become "blocky," since each pixel increases in size as the image is made larger. This is why logos and other designs are typically created in vector format -- the quality will look the same on a business card as it will on a billboard.

3. Which software listed in question 1 uses mostly raster graphics?

4. Which uses mostly vector graphics? 
5. Research: Draw and label an enlarged raster graphic and an enlarged vector graphic.

Assessment:
Correct written answers on answer sheets