If you’re reading this, you’re probably using a computer! Computers come in many shapes and sizes. You might be using a desktop, a laptop, a tablet, a smartphone, or even a TV. But what exactly is a computer?
Simply put, a computer is a machine that follows instructions. Instructions are steps that tell us how to do something. Just like when someone shows you how to put on a jacket, computers need instructions to do their tasks. These instructions are called programs.
When a computer follows a program, we say it is running the program. This helps the computer accomplish tasks. For example, when you use a tablet or smartphone, you might use an app. An app is a special program that does a specific job, like helping you learn math or checking the weather.
Computers have many parts, but two are very important. The first is the Central Processing Unit, or CPU. The CPU is like the brain of the computer. It helps the computer read and follow instructions. The second important part is memory. Memory helps the computer remember which step it’s on in a program. Unlike our brains, a computer’s memory is stored in tiny electrical circuits called chips.
Computers also have parts we can see and touch. To give a computer information, we use a keyboard. Some keyboards are separate, while others are part of the screen. We can also use a mouse to move a pointer on the screen and give instructions. Some computers let us use our fingers on the screen instead of a mouse.
The screen is an important part of a computer. It shows us what the computer is doing, like a math game or a picture. Printers can give us words and pictures on paper, and speakers or headphones let us hear sounds.
Computers are not just for fun and games. They help people talk to each other around the world, design buildings, and even launch astronauts into space. Every day, we find new ways for computers to help us.
Thanks for learning about computers with us! If you have any questions, ask a grownup to help you leave a comment or send an email to [email protected]!
Build Your Own “Computer”: Gather some everyday items like boxes, buttons, and paper. Pretend these are parts of a computer. Use a box as the “CPU” and draw buttons on paper to represent a keyboard. Discuss with a friend or family member what each part does. How does your “computer” help you with tasks?
Program a Friend: Pair up with a friend or family member. One person will be the “computer,” and the other will be the “programmer.” The programmer gives step-by-step instructions for a simple task, like drawing a smiley face or making a sandwich. The “computer” must follow the instructions exactly. Talk about how important clear instructions are for computers.
Observe and Report: Spend a day observing the different types of computers you encounter. Make a list of all the computers you see, such as smartphones, tablets, or laptops. Note what each computer is doing and how it helps people. Share your findings with your class or family and discuss the different ways computers are used in everyday life.
