Digital Technology CCEA GCSE Unit1 Data

Data can be stored as Date/Time. Which of these is short time?

Sample rate is the number of audio sound samples captured every second, it is measured in ___?

1 byte is 2 nibbles. A nibble is 4 bits. How many nibbles are needed to store the word DIGITAL

Which of these is not a video format?

Data can be a character, a single letter or digit from the character set ASCII. What is ASCII?

A buffer is a ____ store for a downloaded part of the video, before it is watched?

Which of these is data, rather than information?

An analogue signal is a continuous varying signal that represents a ___ quantity?

A character (letter, digit, symbol) is represented by one byte. How many bits in a byte?

A bit is the smallest unit of computer storage and has only two values, which are...?

Data can be stored as numeric data. What can a real number have that an integer doesn't?

In lossy compression the size is reduced by removing some of the data, what is the other type?

Bitmap graphics are made up of pixels. Bitmap graphics become ______ when enlarged.

The greater the number of pixels used in an image the higher the _____?

What process allows video to be viewed straight away without waiting for the full download?

Put in order...smallest to largest.

Vector based graphics are made from mathematical shapes & will not lose ______ when enlarged?

Which of these is not an image format?

Order these elements of an information system.

Bit depth: bits used to store each sound sample. A 4 bit system would have ? possible sounds.

The term 'bit' is short for...?

Which of these is used to transfer between database and spreadsheet applications?

A pixel is the smallest unit of a digital image. A 2⁵ pixel could have how many colours?

Bit rate is the quantity of data processed in a given amount of time. It can be measured in?

Before a computer can process a sound it has to be converted using an ADC, what is ADC?

Data portability is the ability to _____ data between computers or between software.

Which of these is not an audio file?