CS: Software vs Hardware: Inside a Computer
Identify computer parts and explain how programs use them
CS: Software vs Hardware: Inside a Computer
Identify computer parts and explain how programs use them
CS - Grade 6-8
- 1
Classify each item as hardware or software: keyboard, web browser, RAM, operating system, mouse, photo editing app.
Hardware is physical. Software is made of instructions and data.
The keyboard, RAM, and mouse are hardware because they are physical parts you can touch. The web browser, operating system, and photo editing app are software because they are programs or instructions that run on hardware. - 2
A student says, "The CPU is a program that stores all my files." Explain what is incorrect about this statement.
The statement is incorrect because the CPU is hardware, not a program. The CPU processes instructions, while files are usually stored on a storage device such as an SSD or hard drive. - 3
Describe the main job of the CPU in a computer.
Think of the CPU as the part that follows instructions very quickly.
The CPU is the main processor of the computer. It carries out instructions from software, performs calculations, and helps control what other parts of the computer do. - 4
Explain the difference between RAM and long-term storage such as an SSD.
RAM temporarily holds data and instructions that the computer is using right now, and its contents are usually lost when the power is off. An SSD stores files and programs for the long term, even when the computer is turned off. - 5
When you open a game, it loads from the SSD into RAM before the CPU runs many of its instructions. Explain why RAM is useful for this process.
Focus on speed and what the computer is using right now.
RAM is useful because it gives the computer quick access to the data and instructions the game needs while it is running. This helps the CPU work faster than if it had to constantly get everything from long-term storage. - 6
List three examples of input devices and explain what kind of information each one sends into a computer.
A keyboard sends typed letters, numbers, and commands into the computer. A mouse sends movement and click information. A microphone sends sound information. - 7
List three examples of output devices and explain what each one sends out from a computer.
Output devices help the computer communicate results to a person.
A monitor sends out visual information such as text, images, and video. Speakers send out sound. A printer sends out information on paper. - 8
A computer will turn on, but nothing appears on the monitor. Name two hardware parts or connections that could be checked first, and explain why.
The monitor cable could be checked because the video signal may not be reaching the screen. The monitor power connection could also be checked because the screen cannot display anything without power. - 9
A word processor, an operating system, and a video game are all software. Explain one way they are similar and one way they are different.
Compare what they are made of and what they are used for.
They are similar because all three are sets of instructions that run on computer hardware. They are different because they have different purposes: a word processor helps create documents, an operating system manages the computer, and a video game provides interactive entertainment. - 10
Put these events in a logical order when a user opens a drawing app: The app window appears on the screen. The user double-clicks the app icon. The operating system tells the computer to load the app. The app's instructions are copied into RAM.
First, the user double-clicks the app icon. Next, the operating system tells the computer to load the app. Then, the app's instructions are copied into RAM. Finally, the app window appears on the screen. - 11
Explain the role of the motherboard inside a computer.
Think about what connects the main parts inside the computer.
The motherboard is the main circuit board that connects many computer parts together. It allows parts such as the CPU, RAM, storage, and input or output ports to communicate. - 12
Classify each item as internal hardware, external hardware, or software: graphics card, headphones, spreadsheet program, motherboard, monitor, antivirus program.
The graphics card and motherboard are internal hardware because they are physical parts inside the computer. The headphones and monitor are external hardware because they are physical devices connected outside the computer. The spreadsheet program and antivirus program are software because they are programs. - 13
A computer has a fast CPU but very little RAM. Describe one problem a user might notice when many browser tabs are open.
Think about what RAM holds while programs are running.
The user might notice that the computer slows down, freezes, or switches between tabs slowly. This can happen because there is not enough RAM to hold all the active data for many open tabs at the same time. - 14
Look at the parts of a computer system: input device, CPU, RAM, storage, output device. Explain how these parts could work together when a user types a sentence and saves it.
The keyboard acts as the input device by sending the typed letters to the computer. The CPU processes the instructions from the writing program, RAM temporarily holds the document while it is being edited, the monitor shows the sentence as output, and storage saves the file for later. - 15
Create a two-column comparison between hardware and software. Include a definition and two examples for each.
Use one column for physical parts and one column for programs or instructions.
Hardware is the physical equipment of a computer, such as a CPU and keyboard. Software is the instructions and programs that run on the hardware, such as an operating system and a web browser.