Higher: Computer Systems

A common notation used to store negative integers is called?

• two's complement

• two's compliment

• binary notation

• integers notation

What is an Extended ASCII?

• 8 bit code

• Stores 256 different text characters

• Limited to storing some control characters, numbers, the alphabet used in English

• Selection of characters from other languages

Unicode is used to store text characters. 16 bit Unicode can store 65 536 characters including many different alphabets, symbols and even emojis. It's used in web-coding to display a non-standard characters.

• TRUE

• FALSE

Graphics can be stored as a:

• bit-mapped graphics

• vector graphics

• animation graphics GIF

• graphics supporting transparency such as PNG

A bit-mapped graphic comprises rows and columns of coloured pixels.

• TRUE

• FALSE

The storage requirements of a bit-mapped graphic are determined by the number of:

(a)  

Select correct representation for graphic's resolution:

• 1400x800

• 1400:800

• 1400=800

• 1400/800

The number of bits used to store each pixel is called colour ...?

(a)  

A vector graphic is created from:

• shapes

• colours

• instructions

• pixels

Select attributes stored and saved as a list to create regular shapes of vector graphic:

• x and y coordinates

• length and width

• fill colour

• line thickness