Computer Systems (Data Representation)
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What do Computer Systems use to store data?
Binary
What is the Binary value of 123?
01111011
What is the Denary value of 10101001?
169
How are real numbers stored on a computer?
By the Mantissa and the Exponent
What is the Mantissa?
The mantissa is the “number” part of the scientific notation
What is the Exponent?
The Exponent is the “power” of the scientific notation
What is the name of the method of storing real numbers on a computer?
Floating Point Representation
What is the name given to the binary code for all characters?
ASCII (American Standard Code for Information Interchange)
What is the limit of ASCII?
256
What is the name of the total number of pixels in a bit-mapped image?
Resolution
What is the name of the total number of colours used in a a bit-mapped image?
Bit-Depth
Bit-Mapped images are one type of graphic. What is the other type of graphic?
Vector Graphic
How are Vector Graphics stored?
By it’s attributes
What are some examples of attributes of vector graphics?
Line Colour Fill Colour Co-Ordinates
What are the types of vector objects?
Rectangle Line Ellipse Polygon
What is a definition of fill colour?
Fill Colour is the colour used to fill the inside of a vector graphic
What is the definition of line colour?
Line Colour is the colour used on the rim of the vector graphic