S1 Computer Systems

The binary number 1101 represents the decimal number (a)  

The decimal number 9 is represented by (a)   in binary.

The largest number that can be represented by 4 bits is:

• 12

• 13

• 15

• 31

The smallest number that can be represented by 4 bits is:

• 1

• 0

• 2

• 3

Text must be stored in a binary code in computers. this code is called:

• Code for text

• ASCII

• Alphabet code

• ACISS

A bit (a)   graphic is one way of storing an image on a computer.

Bitmap images are stored as a series of tiny dots called

• Pixies

• Pixels

• Pixars

• Pictures

How many bits would it take to represent this black and white image?

• 10

• 20

• 25

• 36

In a colour bit mapped graphic, if you use 4 bits for each pixel how many colours can you represent?

• 32

• 8

• 16

• 4

What is an input device?

• An input device is a device that converts the results from the processor into data we can see or hear.

• An input device is a device that allows the user to save data to and to load data from.

• An input device is part of the processor of a computer.

• An input device is a device that allows the user to give the computer data.