Binary Numbers and Character Representation

Binary numbers can represent different forms of data. One form of data is characters. Complete the description of how computers represent characters in binary using the given list of terms. Not all terms will be used. Terms: 2, 4, 8, 9, 16, 32, 256, 71, 72, 74, 76, 78, 80, 81, all, different, identical, one, repeated, similar, some, unique. A character set stores (a)   of the characters that the computer can represent.

Binary numbers can represent different forms of data. One form of data is characters. Complete the description of how computers represent characters in binary using the given list of terms. Not all terms will be used. Terms: 2, 4, 8, 9, 16, 32, 256, 71, 72, 74, 76, 78, 80, 81, all, different, identical, one, repeated, similar, some, unique. Each character is given a (a)   binary code.

Binary numbers can represent different forms of data. One form of data is characters. Complete the description of how computers represent characters in binary using the given list of terms. Not all terms will be used. Terms: 2, 4, 8, 9, 16, 32, 256, 71, 72, 74, 76, 78, 80, 81, all, different, identical, one, repeated, similar, some, unique. Lower-case and upper-case letters in a character set are given ........................................ binary codes.

• different

• identical

• repeated

• similar

Binary numbers can represent different forms of data. One form of data is characters. Complete the description of how computers represent characters in binary using the given list of terms. Not all terms will be used. Terms: 2, 4, 8, 9, 16, 32, 256, 71, 72, 74, 76, 78, 80, 81, all, different, identical, one, repeated, similar, some, unique. One example of a character set is ASCII. This character set uses (a)   bits for each character.

Complete the description of how computers represent characters in binary using the given list of terms. If the code value for the character 'F' is 70 then the code value for the character 'L' is ........................................ .

• 76

• 72

• 80

• 65

A pixel is defined as:

A student is creating a presentation containing images and sound. The student creates 10 bitmap images using a computer. Each image has a colour depth of 8-bits and a resolution of 800 × 500 pixels. ii. Calculate the total file size of the 10 images in kilobytes. Show your working out.

A student is creating a presentation containing images and sound. The student creates 10 bitmap images using a computer. Each image has a colour depth of 8-bits and a resolution of 800 × 500 pixels. iii. State the minimum number of bits that will be needed to represent 240 different colours.

State what is meant by metadata in an image file.

• Metadata in an image file refers to information about the image such as date, location, and camera settings.

• Metadata in an image file is the actual visual content of the image.

• Metadata in an image file is the file size only.

• Metadata in an image file refers to the color of the image only.

State the maximum number of different colours that can be represented in 4-bits.