Computer Science Basics: Binary

What does the word "bit" mean?

• A small insect

• Binary Digit

• Basic Information Type

• Binary Integrated Task

Answer explanation

📝 Explanation: "Bit" stands for binary digit because it represents either a 1 or a 0.

A binary digit can only be a _ or a _.

Answer explanation

📝 Explanation: Binary digits are only ever 1 or 0, like an on/off switch.

Did you already know that large files contain millions of bits?

• Yes, definitely!

• A little bit

• No, that's new to me

Answer explanation

📝 Explanation: Large digital files like videos contain millions of ones and zeros (bits).

In binary code, the number "1" means:

• Switch off

• Switch on

• Switch broken

Answer explanation

📝 Explanation: In binary, "1" represents an "on" state, just like turning a light switch on.

Match each the binary digit 0 to its meaning : (a)   ​ (b)  

• Off
• On

Answer explanation

📝 Explanation: In binary, "1" represents an "on" state, just like turning a light switch on.

True or False ⚙️
Binary can have three possible states: on, off, and standby.

• True

• False

Answer explanation

📝 Explanation: Binary only has two possible states: on (1) and off (0).

Sort these into Binary or Decimal:

Groups:

(a) Decimal

,

(b) Binary

• Numbers 0-1

• Numbers 0-9

Answer explanation

📝 Explanation: Decimal uses digits 0–9; Binary only uses digits 0 and 1.

Why don't computers use decimal?

• It's easier for humans, not computers

• Decimal is faster for computers

• Binary is more confusing

Answer explanation

📝 Explanation: Computers process information faster and easier with only two states (binary), instead of decimal's ten states.

Can you list at least two things in your daily life that could be represented by binary code?

Answer explanation

📝 Explanation: Digital items such as text messages, photos, music, and videos are all represented by binary code.

"Everything digital can be represented in __​ __."​ ​ (a)   ​

• Videos
• Images
• Binary
• Text

Answer explanation

📝 Explanation: Everything digital, from pictures to games, can be represented using binary (ones and zeros).