In AP Computer Science Principles, a computing device is a physical artifact that can run a program (EK CSN-1.A.1). Examples include computers, tablets, servers, routers, and smart sensors. Computing devices are the building blocks of computing systems and computer networks.
A computing device is any physical artifact that can run a program. That's the exact College Board definition (EK CSN-1.A.1), and the word "physical" matters. A computing device is hardware you could touch, not software or data. The CED's own examples are computers, tablets, servers, routers, and smart sensors. Notice that last two. A router doesn't look like a "computer" to most people, but it runs specialized programs that move data around, so it counts. Same with a smart sensor in a thermostat or a fitness tracker.
Computing devices sit at the bottom of a hierarchy the exam loves to test. Stack them up and you get bigger structures. A computing system is a group of computing devices and programs working together for a common purpose (EK CSN-1.A.2). A computer network is a group of interconnected computing devices that can send or receive data (EK CSN-1.A.3), and a network is itself a type of computing system (EK CSN-1.A.4). The Internet is just this idea taken to its extreme, a network of networks made of billions of computing devices talking through shared protocols.
This term anchors Topic 4.1 (The Internet) in Unit 4: Computer Systems and Networks, and it supports learning objective 4.1.A, which asks you to explain how computing devices work together in a network. Everything else in Unit 4 builds on it. You can't explain how the Internet works (4.1.B), how packets travel (4.1.C), or how the Web differs from the Internet (4.1.D) without first knowing what the devices at each end and along the way actually are. The exam also uses computing devices to define a path, which is a sequence of directly connected devices between a sender and a receiver. If you nail the device → system → network hierarchy, half of Topic 4.1 falls into place.
Keep studying AP Computer Science Principles Unit 4
Computer Network (Unit 4)
A network is what you get when computing devices connect and start sending data to each other. The exam loves the nesting here. Devices make up networks, and a network is itself a type of computing system.
Routing (Unit 4)
Routers are computing devices, which surprises people. They run programs whose whole job is deciding which path a packet takes next. Routing on the Internet is dynamic, so the path between two devices can change from one packet to the next.
TCP (Unit 4)
Protocols like TCP, IP, and UDP are the agreed-upon rules that let totally different computing devices talk to each other. Because Internet protocols are open, you can plug almost any new device into the network and it just works.
Central Processing Unit (CPU) (Unit 4)
The CPU is the part inside a computing device that actually executes the program. "Can run a program" is the defining test for a computing device, and the CPU is the hardware that passes that test.
This shows up in multiple-choice questions, usually testing whether you know the definitions and the hierarchy cold. Expect stems like "which of these is a computing device?" where the trap answers are software or data and the sneaky correct answers are routers and smart sensors. You'll also see questions asking what distinguishes a computing system from a single computing device (a system is multiple devices and programs working toward a common purpose), and path-tracing questions like "if devices are connected A-B-C-D-E, what is the path from A to E?" The answer is the full sequence of directly connected devices, A-B-C-D-E. Another common angle asks which devices keep the Internet running by executing specialized programs. That's routers and servers. No released FRQ uses this term directly since the Create performance task focuses on your program, but these definitions are pure multiple-choice fuel.
A computing device is one physical artifact that can run a program. A computing system is a group of computing devices AND programs working together for a common purpose. Think of it as one musician versus the whole orchestra. A computer network is a specific kind of computing system where the devices are interconnected and exchange data. On the exam, if the question mentions multiple devices cooperating, you're in computing system territory, not computing device territory.
A computing device is a physical artifact that can run a program, and the CED's examples are computers, tablets, servers, routers, and smart sensors.
A computing system is a group of computing devices and programs working together for a common purpose, so one device alone is never a system.
A computer network is a group of interconnected computing devices that can send or receive data, and a network is itself a type of computing system.
A path between two devices on a network is a sequence of directly connected devices from the sender to the receiver.
Routers and smart sensors count as computing devices even though they don't look like traditional computers, because they run programs.
Open protocols like TCP, IP, and UDP are what let billions of different computing devices connect to the Internet and communicate.
It's a physical artifact that can run a program (EK CSN-1.A.1). The CED's examples are computers, tablets, servers, routers, and smart sensors.
Yes. A router runs specialized programs that direct data between networks, so it meets the definition. This is a favorite multiple-choice trap because routers don't look like typical computers.
A computing device is one physical machine that can run a program. A computing system is a group of computing devices and programs working together for a common purpose. A computer network is a type of computing system where the devices are interconnected and exchange data.
No. The definition requires a physical artifact, so programs, apps, and data don't qualify. The device is the hardware that runs the program, not the program itself.
Through multiple-choice questions on Topic 4.1, usually testing the definition, the device-system-network hierarchy, or path-tracing between connected devices. For example, in a chain A-B-C-D-E, the path from A to E is the full sequence of directly connected devices.