1. Information Representation REVISION

1001 represents a binary integer using the two's complement form. What is its equivalent denary value?

• 7

• -7

• -1

• 16

Using 8 bits to represent a number, which is the two's complement form of the integer -8?

• 1000

• 0100

• 1111 1000

• 1

• 0000 1000

What is the BCD format of the denary integer 798?

• 0111 1001 1000

• 0011 0001 1110

Which denary is represented by this BCD number: 1001 0111?

• -77

• 97

• 151

• -151

____________ resolution is the number of bits used to represent _________ amplitude.

• sound, sampling

• image, pixel

• sampling, sound

• pixel, image

Sampling ___________ is the number of __________ samples taken per second.

• resolution, sound

• resolution, image

• sound, rate

• rate, sound

______________ is the smallest picture element that makes up a __________ image.

• shape, vector graphic

• pixel, vector graphic

• pixel, bitmap

• bitmap, pixel

Colour depth is the number of ________ used to represent the colours in a _________ . 8 bit colour depth can represent 2^8 = _______ colours.

• bits, pixel, 256

• pixels, bitmap, 16

• pixels, vector graphic, 256

Number of horizontal and vertical pixels that make up a screen display.

• Image resolution

• Screen resolution

• Sampling resolution

An image is 100 pixels wide and 50 pixels high. The developer decides to save it as a 2-colour bitmap image. What is the size of the image file?

• 5000 bits

• 10 000 bits

• 5000 bytes

• 10 000 bytes