Computer Basics Binary Bits & Bytes


Computer Basics


Bits & Bytes

Answer Key

1. All the information that travels through your computer is based on two commands, which are on and off . The millions of combinations of those two commands given in series are what makes a computer work.

2. The power supply inside your computer sends electricity to all the components inside the computer to create an “on” signal . The memory chips inside the computer are divided into thousands of tiny compartments called bits . Each bit has an electronic switch or gate . On means the gate is open , which is read as the number 1 .

The computer reads off bits as 0.

3. Eight bits are grouped together to form a byte. The binary code depends on how the 1’s and 0’s within a byte are grouped.

4. Label the diagram to show how a computer converts data into binary code.

CPU Monitor


Binary Code

5. What does each abbreviation mean?

KB = kilobyte = about 1,000 bytes

MB = megabyte = about 1,000,000 bytes

GB = gigabyte = about 1,000,000,000 bytes

6. The number that comes before the abbreviations represent a computer’s memory capacity, or how many bytes of memory it has.

A 15 GB hard drive has 15,000,000,000 bytes for storing memory.


Each rectangle below represents one byte made up of 8 bits. Label the byte using a 1 for each white “on” bit and a

0 for each black “off” bit.

Remember … One byte = 8 bits

The End!