What is the Base10 number system known as?

Denary

What is the Base2 number system known as?

Binary

What digits can be used in the binary number system?

0s and 1s

What is the binary value 11111111 in denary?

255

How many bits are there in a byte?

8

How many bytes are there in a kilobyte?

1024

How many bits are there in a nibble?

4

What name is given to the unit of data larger than a kilobyte?

Megabyte

What does 1024 gigabytes equal?

1 terabyte

What is the binary value 00101011 in denary?

43

What is the binary value 00010010 in denary?

18

What is the denary value 108 in binary?

01101100

What is the denary value 16 in binary?

00010000

What is the denary value 62 in binary?

00111110

What is the result of this in binary?
00100100 + 00001101

00110001

What is the result of this in denary?
11000101 + 00001100

209

What is the result of this in binary?
11010011  10001001

01001010

What is the result of this in denary?
10010101  01001011

74

What is the Base16 number system known as?

Hexadecimal

What does 'overflow' mean?

When a number is too large to fit into the allocated number of bits. Some bits are lost, leaving an incorrect value.

What is the denary value 10 in hexadecimal?

A

What is the hexadecimal value F in denary?

15

What is the binary value 0101 in hexadecimal?

5

What is the denary value 201 in hexadecimal?

C9

What is the hexadecimal value F3 in denary?

243

What is the binary value 01001100 in hexadecimal?

4C

What is the hexadecimal value 3D in binary?

00111101

What is a character set?

The characters available to a computer

How many bits does ASCII use for each character?

7

What language is ASCII designed for?

English

What does ASCII stand for?

American Standard Code for Information Interchange

How many bits does the Unicode character encoding system use?

Up to 32 bits, but it can also use a 16bit version

How many character possibilities does Unicode allow for?

More than 4 billion possibilities

What is colour depth/bit depth?

The number of bits used for each pixel. More bits mean more colours can be represented.

What is resolution?

The number of pixels per unit, eg. ppi (pixels per inch)

What is metadata?

Information about the image data which allows the computer to recreate the image from binary data in the file. It must comtain height and width (in pixels) and the colour depth in bpp (bits per pixel)

What is the term for sound that continuously varies?

Analogue

How is analogue sound converted into digital sound?

The sound wave is sampled at set intervals and the values are recorded.

What is meant by 'sample rate'?

The number of times the sound is sampled per second.

What is sample rate measured in?

Hz (Hertz), eg. 50Hz = 50 samples taken per second

What is meant by 'bit rate'?

The space available for each second, measured in kilobits per second (kbits/s).
For example, 128kbits/s is 128 kilobits per second of sampled sound.

What is meant by an 'address'?

A location in main memory where data or instructions are stored

What two parts is an instruction decoded into?

Operator and operand

What is meant by the term 'register'?

A special fast access part of the CPU, which stores data in use by the CPU

What is a program counter?

A register in the CPU, which keeps the address of the next instruction

What is an operator?

Part of an instruction which tells the CPU what to do

What is an operand?

The part of an instruction what to apply the operation to

What is an accumulator?

A register in the CPU which stores data currently in use by the CPU
