Binary

Why is data in a computer represented in binary?

• Its easier to use when programming software

• We already used decimal for other things and needed a different system

• Computer switches are on or off

• Two was the smallest number to build a number system on

1 byte is equal to 8 bits, how many bytes represent one character of text?

• 1 bit

• 4 bits

• 1 byte

• 1 Kilobyte (Kb)

In a binary table starting at 1, when we move to the next column on the left, we ____________ the value of the column.

• halve

• square

• double

• triple

• hash

How do we show the number 28 in binary?

• 00101010

• 00011001

• 00011100

• 00110011

What does the acronym ASCII stand for?

• Associated Standards Council for Internet Information

• American Standards Code for Information Interchange

• Acronym Studies Corrected for Internet Interference

• All Standards Correctly Infer Intelligence

ASCII codes used to use only 7 bits but a further bit was added for what purpose?

• Special characters such as copyright

• Error checking to prevent hacking

• 8 bits is a byte and its easier to process in whole bytes

• So we could use bold, italic, and underline

ASCII bit patterns cannot be used for?

• Printing text

• Outputting numbers

• Performing calculations

• Producing full sentences

Binary digits can be used for :

Tick the correct answers

• letters

• numbers

• special characters

There are _________ bits in a byte

The number 54 in binary is:

• 00110110

• 36

• 00110101

• 00101001