Y7 Computing Key Words, Definitions & Questions

Define 'Bit'

the smallest unit of data in a computer.

Define 'Byte'

1 byte = 8 bits

Define 'Terabyte'

1000 gigabytes

Define 'Megabyte'

1000 kilo bytes

Define 'Gigabyte'

1000 megabytes

Define 'Petabyte'

1000 terabytes

How many bytes, exactly, are there in a kilobyte?

1024

How many bits, exactly, are there in a kilobyte?

1024 * 8 = 8192

Define 'Kilobyte'

1024 bytes or 1024 *8 bits

I have a JPG image file that is 104 KB. How big is it in bytes and bits exactly?

106496 and 851968

How many bits are there in 2 bytes?

16

I have a text file that is 3 KB in size. How big is it in bytes and bits exactly?

3072 and 24576

Why do computers represent data in binary?

A Computer has millions of switches, which only have 2 states: on and off, or 1 and 0.

Where does the word BIT come from?

binary digit

Define 'Nibble'

half a byte or 4 bits

What is half a byte called?

nibble