GCSE Comp Sci - Unit 2 Data Part 1

What is an Analogue to Digital Convertor?

• A device that converts analogue waves to digital signals.

• A device that converts digital waves to analogue signals.

• A device that converts digital signals to analogue waves.

• A device that converts drawings to bitmaps

What is an Arithmetic Shift?

• A shift operation that uses a copy of the least significant bit to fill vacant spaces when shifting right.

• A shift operation that always uses a one to fill vacant spaces when shifting right.

• A shift operation that uses a copy of the most significant bit to fill vacant spaces when shifting right.

• A shift operation that always uses a zero to fill vacant spaces when shifting right.

What is ASCII?

• A character encoding format that uses 11 bits to represent English characters

• A character encoding format that uses 7 bits to represent English characters

• A character encoding format that uses 5 bits to represent English characters

• A character encoding format that uses 9 bits to represent English characters

What is Binary?

• A base-2 number system that uses two digits: 1 and 2.

• A base-2 number system that uses three digits: 0, 1 and 2.

• A base-2 number system that uses three digits: 1, 2 and 3.

• A base-2 number system that uses two digits: 0 and 1.

What is Binary Addition?

• The process of adding two binary numbers

• The process of subtracting two binary numbers

• The process of dividing two binary numbers

• The process of multiplying two binary numbers

What are Binary Prefixes?

• A set of prefixes for binary powers to be used in data transmission.

• A set of prefixes for binary powers to be used in data storage.

• A set of prefixes for denary powers to be used in data storage.

• A set of prefixes for denary powers to be used in data transmission.

What is a Binary Shift?

• The process of flipping each bit in a binary pattern.

• The processing of replacing all the odd bits in a binary pattern.

• The process of replacing all the even bits in a binary pattern.

• The process of replacing each bit with an adjacent bit by moving a binary value left or right.

What is a Bit?

• A single unit of data representing a one or two.

• A double unit of data.

• A triple unit of data.

• A single unit of data representing a zero or one.

What is a Bitmap?

• A digital image made up of vectors, lines and shapes.

• A digital image made up of a grid of dots.

• A digital sound made up of electronic signals.

• A digital sound made up of curves.

What is Bit Depth?

• The number of bits used to represent the time of a sound.

• The numbers of bits used to represent the sound sample.

• The number of bits in a colour.

• The number of bits in a character.