Computing Comp 1

COMPUTING UNIT 1 NOTES

Chapter 5: Data Representation

Binary and hexadecimal numbers

• What is binary addition?
• What is binary multiplication?
• What is two's complement?
• Waht is hexadeciamal?
• What are real numbers?

Character coding schemes

• What are the two character coding schemes?
• What are the differences between the two character coding schemes?
• What are the four ways a computer checks for binary errors?
• Explain how each one works
• State the purpose of Gray code and its advantages

Bitmapped and Vector graphics

• Define a pixcel
• Define a bitmap
• Explain the steps of how an image is stored on the computer
• Define resolution
• Define colour depth
• Define Vector graphics
• What are the advantages and disadvantages…